{"product_id":"sea-to-summit-evac-heavy-duty-compression-dry-bag","title":"Sea to Summit Evac Heavy Duty Compression Dry Bag","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\u003ctitle\u003eEvac Heavy Duty Compression Dry Bag\u003c\/title\u003e\u003cstyle\u003e\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Barlow+Condensed:wght@400;600;700;800\u0026family=Barlow:wght@300;400;500;600\u0026display=swap');\n:root { --black: #0a0a0a; --white: #ffffff; --mid: #f5f5f5; --border: #e8e8e8; --muted: #999; --body: #222; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\n.spur-wrap { font-family: 'Barlow', sans-serif; background: var(--white); color: var(--black); max-width: 1100px; margin: 0 auto; padding: 48px 24px; }\n.spur-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 48px; border-bottom: 1px solid var(--border); padding-bottom: 24px; flex-wrap: wrap; 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grid-template-columns: 200px 1fr; border-bottom: 1px solid var(--border); }\n.spec-key { font-size: 12px; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); padding: 12px 16px 12px 0; }\n.spec-val { font-size: 14px; font-weight: 300; color: var(--body); padding: 12px 0; line-height: 1.5; }\n.spec-category { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; margin: 24px 0 8px 0; color: var(--muted); }\n.spec-category:first-child { margin-top: 0; }\n.benefits-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-top: 8px; }\n.benefit-card { border: 1px solid var(--border); border-radius: 4px; padding: 16px 14px; text-align: center; }\n.benefit-name { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 6px; }\n.benefit-desc { font-size: 12px; font-weight: 300; color: #555; line-height: 1.45; }\n.size-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 8px; }\n.size-card { border: 1px solid var(--border); border-radius: 4px; padding: 14px 12px; background: var(--mid); }\n.size-name { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 8px; }\n.size-stat { font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 2px; }\n.size-val { font-size: 13px; font-weight: 500; color: var(--body); margin-bottom: 8px; line-height: 1.4; }\n.size-val:last-child { margin-bottom: 0; }\n@media (max-width: 600px) { .spec-row { grid-template-columns: 1fr; } .spec-key { padding-bottom: 2px; } .spec-val { padding-top: 0; padding-bottom: 12px; } .size-grid { grid-template-columns: 1fr; } }\n\u003c\/style\u003e\u003cscript src=\"chrome-extension:\/\/idnnbdplmphpflfnlkomgpfbpcgelopg\/inpage.js\" id=\"xverse-wallet-provider\" data-is-priority=\"true\"\u003e\u003c\/script\u003e\u003cdiv class=\"spur-wrap\"\u003e\n\u003cdiv class=\"spur-header\"\u003e\n\u003cdiv class=\"spur-title\"\u003eEvac Heavy Duty Compression Dry Bag\u003c\/div\u003e\n\u003cdiv class=\"spur-meta\"\u003e4-Size Compression Dry Bag · 420D TPU-Laminated Ripstop · eVac Air-Permeable Base · 10,000mm Hydrostatic Head\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cinput type=\"radio\" name=\"spur-tabs\" id=\"tab-desc\" class=\"tab-radio\" checked\u003e\u003cinput type=\"radio\" name=\"spur-tabs\" id=\"tab-key\" class=\"tab-radio\"\u003e\u003cinput type=\"radio\" name=\"spur-tabs\" id=\"tab-specs\" class=\"tab-radio\"\u003e\u003cinput type=\"radio\" name=\"spur-tabs\" id=\"tab-care\" class=\"tab-radio\"\u003e\u003cdiv class=\"tab-nav\"\u003e\n\u003clabel for=\"tab-desc\"\u003eDescription\u003c\/label\u003e\u003clabel for=\"tab-key\"\u003eKey Features\u003c\/label\u003e\u003clabel for=\"tab-specs\"\u003eSpecifications\u003c\/label\u003e\u003clabel for=\"tab-care\"\u003eCare\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cscript\u003e\n(function(){\n var names = ['desc','key','specs','care'];\n function show(n){\n names.forEach(function(t){\n var panel = document.querySelector('.' + t + '-panel');\n if(panel) panel.style.setProperty('display', (t === n) ? 'block' : 'none', 'important');\n });\n }\n names.forEach(function(t){\n var input = document.getElementById('tab-' + t);\n if(input) input.addEventListener('change', function(){ show(t); });\n var label = document.querySelector('label[for=\"tab-' + t + '\"]');\n if(label) label.addEventListener('click', function(){\n show(t);\n var inp = document.getElementById('tab-' + t);\n if(inp) inp.checked = true;\n });\n });\n show('desc');\n})();\n\u003c\/script\u003e\u003cdiv class=\"spur-panels\"\u003e\n\u003c!-- DESCRIPTION PANEL --\u003e\u003cdiv class=\"tab-panel desc-panel\"\u003e\u003cp class=\"desc-intro\"\u003ePerfect dry compression storage for everything from kayaks, motorbikes, roof racks and beyond. Made from a super-strong, abrasion and puncture-resistant 420D waterproof main body fabric and a 500D Cordura EVAC waterproof\/air-permeable base. Squeeze air out while keeping the contents dry, without the need for a purge valve. The Evac Compression Dry Bag HD simple to use, even in challenging conditions. Four compression straps make it easy to evenly compress soft items, lash points provide reliable attachment points, and the hypalon non-wicking roll-top closure also keeps the water out. Simple, extremely rugged and reliable — the epitome of durability, versatility, and dry compression.\u003c\/p\u003e\u003c\/div\u003e\n\u003c!-- KEY FEATURES PANEL --\u003e\u003cdiv class=\"tab-panel key-panel\"\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003e10,000mm Hydrostatic\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eHeavy-duty waterproofing — withstands rain, spray, river crossings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eeVac Air-Permeable Base\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e500D CORDURA® base lets air OUT, keeps water IN — squeeze to compress.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eHypalon Non-Wicking\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eSynthetic rubber roll-top closure — doesn't wick water into the bag.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003e4 Compression Straps\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e2 ladderlock + 2 side-release buckles — even compression for soft items.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eField Repair Buckle\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003ePatented 15mm buckle — user-replaceable in the field, no tools needed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eLash Points\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eMultiple attachment loops for kayaks, motorbikes, roof racks, snowmobiles.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eSize Comparison (4 Sizes)\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003e10,000mm Hydrostatic + 420D Ripstop Body (HD WATERPROOFING)\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe HD version uses upgraded fabric construction vs standard STS dry bags:\n\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e\n- 420D (denier) TPU-laminated ripstop nylon\n- TPU laminate = waterproof inner coating (bonded to the nylon)\n- Ripstop = small reinforcement squares (prevents tear propagation)\n- Higher denier = thicker, more durable fabric\n- vs standard dry bag fabrics (typically 70D-210D)\n\n\u003cstrong\u003e10,000mm Hydrostatic Head:\u003c\/strong\u003e\n- Same excellent rating as the Evac Bikepack Set\n- Suitable for all wet conditions except submersion\n- Per FAQ: \"the body of the dry bag is waterproof (10,000 mm). However, avoid submersion since water can seep through the roll-top closure of any dry bag\"\n\n\u003cstrong\u003eHD (Heavy Duty) Designation:\u003c\/strong\u003e\n- Thicker fabric for wear-and-tear resistance\n- Suitable for vehicle-mounted applications (motorbike, kayak, roof rack)\n- Heavier than standard dry bags (8-13 oz for the bags themselves)\n- Worth the weight for rugged use\n\n\u003cstrong\u003eWhy 420D specifically:\u003c\/strong\u003e\n- Thick enough for motorcycle abrasion\n- Puncture-resistant against branches, rocks\n- Holds shape better than lighter fabrics\n- Standard for rugged outdoor use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eeVac Base — Air OUT, Water IN\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe HD version uses STS's \u003cstrong\u003eeVac Fabric\u003c\/strong\u003e at the base — a more aggressive version than the Bikepack Dry Bag Set's Evac laminate:\n\n\u003cstrong\u003ePer STS:\u003c\/strong\u003e \"Squeeze air out while keeping the contents dry, without the need for a purge valve.\"\n\n\u003cstrong\u003eWhat eVac does:\u003c\/strong\u003e\n- Microporous membrane\n- Air molecules pass through (larger)\n- Water molecules don't (smaller, surface tension)\n- Like Gore-Tex but for dry bag bases\n\n\u003cstrong\u003eWhy the base specifically:\u003c\/strong\u003e\n- Body is waterproof (no air in\/out needed via body)\n- Bottom is where air pools when filling\n- Squeeze the bag → air out through the base\n- The base breathes but doesn't leak water\n\n\u003cstrong\u003eUse technique:\u003c\/strong\u003e\n1. Load gear into the bag\n2. Roll the top 3-4 times and buckle\n3. Squeeze the bag (or sit on it) to expel air\n4. The bag becomes compact + stable\n5. Re-squeeze periodically during compression with straps\n\n\u003cstrong\u003eVersus purge valves:\u003c\/strong\u003e\n- Purge valves are mechanical (push button)\n- Can break, leak, or get stuck\n- Evac laminate = no moving parts = more reliable\n- \"Without the need for a purge valve\" per STS\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eHypalon Non-Wicking Roll-Top Closure\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe HD's closure uses \u003cstrong\u003eHypalon\u003c\/strong\u003e — STS's premium closure material:\n\n\u003cstrong\u003eWhat \"non-wicking\" means:\u003c\/strong\u003e\n- Wicking = capillary action pulling water along fibers\n- Most nylon closures can wick water a few cm into the bag\n- Hypalon's smooth surface = no wicking\n- Water sits on the outside, doesn't migrate inward\n\n\u003cstrong\u003eWhy this matters for compression:\u003c\/strong\u003e\n- Compression means tight closure = minimal dry area above contents\n- If water wicks past the closure = contents get wet\n- Non-wicking closure = critical for compression bag use\n\n\u003cstrong\u003eHypalon material properties:\u003c\/strong\u003e\n- Synthetic rubber developed by DuPont\n- Highly UV-resistant\n- Highly chemically resistant\n- Flexible at low temperatures (won't stiffen)\n- Won't degrade from sea water or road spray\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003e4 Compression Straps (UNIQUE TO COMPRESSION BAGS)\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe HD has \u003cstrong\u003e4 straps\u003c\/strong\u003e for even compression:\n\n\u003cstrong\u003ePer STS:\u003c\/strong\u003e \"Eliminate bulging and achieve even compression using the four straps with two ladderlock and two easy-access side-release buckles.\"\n\n\u003cstrong\u003eStrap configuration:\u003c\/strong\u003e\n- \u003cstrong\u003e2 ladderlock buckles:\u003c\/strong\u003e Permanently tighten (wrap around with webbing fed through ladderlock)\n- \u003cstrong\u003e2 side-release buckles:\u003c\/strong\u003e Quick-release (snap on\/off)\n\n\u003cstrong\u003eCompression workflow:\u003c\/strong\u003e\n1. Pack soft items (sleeping bag, clothing) loosely\n2. Roll top closed\n3. Pull ladderlock straps tight (these stay tight)\n4. Tension with the side-release straps for final compression\n5. The bag stays compressed in transport\n\n\u003cstrong\u003eWhy 4 straps vs 2:\u003c\/strong\u003e\n- More straps = more even compression\n- Less bulging in the middle\n- Better shape retention\n- More attachment options (can lash to vehicle)\n\n\u003cstrong\u003eSide-release buckles\u003c\/strong\u003e allow quick access without unthreading ladderlock each time. Common bag-use balance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003ePatented Field Repair Buckle\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe HD includes the \u003cstrong\u003epatented STS Field Repair Buckle\u003c\/strong\u003e (15mm):\n\n\u003cstrong\u003eWhat \"field repair\" means:\u003c\/strong\u003e\n- Standard buckles are sewn permanently + can't be replaced without tools\n- Field Repair Buckles have a removable pin design\n- Replace the buckle with no tools — pull out the pin, snap in the new one\n\n\u003cstrong\u003eWhy patented?\u003c\/strong\u003e\n- STS developed this design\n- Trademarked\n- Available aftermarket as a replacement part\n\n\u003cstrong\u003ePractical benefit:\u003c\/strong\u003e\n- Buy one $5 replacement buckle, extend bag life by years\n- Don't throw away the bag when a buckle breaks\n- Compatible with other STS products (some tarps, etc.)\n\n\u003cstrong\u003eBuckle material:\u003c\/strong\u003e 100% Polyformaldehyde (POM, an engineering plastic) — strong, heat-resistant, durable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eLash Loops (Multiple Attachment Points)\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003ePer STS: \"Strong and secure lash loops for attaching to kayaks, bikes, motorbikes and roof racks.\"\n\n\u003cstrong\u003eBuilt-in lash points:\u003c\/strong\u003e\n- Multiple loops on the bag\n- Sturdy webbing (100% nylon)\n- Reinforced stitching at stress points\n- Accept standard bungee cords, straps, or rope\n\n\u003cstrong\u003eVehicle attachment examples:\u003c\/strong\u003e\n- \u003cstrong\u003eKayak:\u003c\/strong\u003e Lash to deck rigging or spray skirt\n- \u003cstrong\u003eMotorbike:\u003c\/strong\u003e Secure to rear rack or seat strap\n- \u003cstrong\u003eRoof rack:\u003c\/strong\u003e Lash to cargo basket or crossbars\n- \u003cstrong\u003eSnowmobile:\u003c\/strong\u003e Secure to rear rack\n- \u003cstrong\u003eBike (smaller sizes):\u003c\/strong\u003e Mount to cargo cage (per FAQ)\n\n\u003cstrong\u003eUse cases:\u003c\/strong\u003e\n- Secure the bag so it doesn't shift during driving\/riding\n- Multiple lashing options for irregular mounting surfaces\n- Compatible with various lashing systems (bungees, straps, rope)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eAward-Winning Storage System\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe Evac Compression Dry Bag HD is \u003cstrong\u003eAward Winning\u003c\/strong\u003e per STS tags — joining the Dry Bag Collection.\n\n\u003cstrong\u003eWhat makes it special:\u003c\/strong\u003e\n- 10,000mm waterproof + 420D durability (rugged)\n- eVac base (air-out, no purge valve needed)\n- Hypalon non-wicking closure\n- 4 compression straps\n- Field Repair Buckle\n- 4 sizes from 8L-35L (covers most use cases)\n- Per FAQ: kayak, motorbike, snowmobile, bikepacking all suitable\n\n\u003cstrong\u003eBest HD dry bag versatility in the STS line:\u003c\/strong\u003e\n- Soft sleeping bag compression\n- Bike cargo (smaller sizes per FAQ)\n- Motorcycle luggage\n- Roof rack cargo\n- Kayak deck bag\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eComparison: DryStorage Lineup vs Evac Bikepack Set\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eDifferent categories within the STS dry bag family:\n\n| Aspect | Evac Compression Dry Bag HD (this) | Evac Bikepack Dry Bag Set (sister) |\n|---|---|---|\n| \u003cstrong\u003eCategory\u003c\/strong\u003e | Compression Sacks | Storage, Packs \u0026amp; Bags |\n| \u003cstrong\u003eBest Use\u003c\/strong\u003e | Compress + protect gear | Bike cargo cage mounting |\n| \u003cstrong\u003eSizes\u003c\/strong\u003e | 8L, 13L, 20L, 35L (4) | 3.7L × 2 (1 set) |\n| \u003cstrong\u003eCompression\u003c\/strong\u003e | \u003cstrong\u003eYes (4 straps)\u003c\/strong\u003e | No (just roll-top) |\n| \u003cstrong\u003eWeight (per unit)\u003c\/strong\u003e | 7.8-13.1 oz | 5.8 oz each |\n| \u003cstrong\u003eMounting\u003c\/strong\u003e | Lash loops, vehicle straps | \u003cstrong\u003eStretch-Loc straps, cargo-cage ready\u003c\/strong\u003e |\n| \u003cstrong\u003eBase Tech\u003c\/strong\u003e | eVac laminate (more aggressive) | Evac laminate (same) |\n| \u003cstrong\u003eBody\u003c\/strong\u003e | 420D TPU-laminated | 420D HD ripstop |\n| \u003cstrong\u003eWaterproofness\u003c\/strong\u003e | 10,000mm | 10,000mm |\n| \u003cstrong\u003eBicycle Cargo Cage Use\u003c\/strong\u003e | Possible (per FAQ) | Designed for this |\n| \u003cstrong\u003eCompression Use\u003c\/strong\u003e | \u003cstrong\u003eDesigned for this\u003c\/strong\u003e | Not intended |\n| \u003cstrong\u003eVehicle Luggage\u003c\/strong\u003e | \u003cstrong\u003eDesigned for this\u003c\/strong\u003e | Useful too |\n| \u003cstrong\u003ePaddle Sports\u003c\/strong\u003e | Yes (per FAQ) | Yes (sister product) |\n\n\u003cstrong\u003eChoose Compression HD for:\u003c\/strong\u003e\n- Compressing sleeping bags + clothes\n- Vehicle luggage (motorbike, roof rack)\n- Larger storage (up to 35L)\n- Compression is important\n- Versatile vehicle attachment\n\n\u003cstrong\u003eChoose Bikepack Dry Bag Set for:\u003c\/strong\u003e\n- Bikepacking-specific cargo cage mounting\n- Smaller gear (2 × 3.7L bags = 7.4L total)\n- Comes with Stretch-Loc straps + lash rails (purpose-built)\n- Frame + fork cargo setup\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eBest Use Cases\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\u003cstrong\u003eCompress Sleeping Bags \u0026amp; Clothes (PRIMARY):\u003c\/strong\u003e\n- Camp quilts, sleeping bags, clothing\n- Reduce volume by 30-50% via compression\n- Keep items dry + organized\n\n\u003cstrong\u003eMotorcycling \/ Overland (per FAQ):\u003c\/strong\u003e\n- \"It is rugged, waterproof and has plenty of attachment points - all of which make it great for motorcycling, snowmobiling\"\n- Hang off rear rack\n- Weatherproof for long-distance touring\n\n\u003cstrong\u003eKayak \/ Paddle Sports (per FAQ):\u003c\/strong\u003e\n- \"Absolutely. The tough nylon material on this dry bag is perfect for water sports\"\n- Lash to deck or rigging\n- Holds gear that stays dry despite splashes\n\n\u003cstrong\u003eRoof Rack Cargo:\u003c\/strong\u003e\n- Stack multiple sizes for trip organization\n- Stack 35L + 20L for gear + clothes\n- Lash to cargo bars or baskets\n\n\u003cstrong\u003eSnowmobiling (per FAQ):\u003c\/strong\u003e\n- Cold-weather uses\n- Durability for impacts\n- White interior for visibility in dim conditions\n\n\u003cstrong\u003eBikepacking (smaller sizes, per FAQ):\u003c\/strong\u003e\n- 8L or 13L = bike cargo options\n- Compress gear small enough for cargo cage\n- Same Evac technology as the Bikepack Dry Bag Set\n\n\u003cstrong\u003eBoat \/ Marine:\u003c\/strong\u003e\n- Yacht tenders, deck storage\n- Waterproof + air-permeable for buoyancy-controlled loads\n- Salt-water tolerant materials\n\n\u003cstrong\u003eStorage at Home:\u003c\/strong\u003e\n- Off-season gear storage\n- Compressed sleeping bags in closet\n- Keeps gear dry + dust-free\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eCompatible Accessories\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\u003cstrong\u003eSTS Field Repair Buckle (15mm, replacement):\u003c\/strong\u003e\n- Buy extra buckles for long trips\n- Field-replaceable in seconds\n- Available from STS support or aftermarket\n\n\u003cstrong\u003eBungee Cords \/ Cargo Nets:\u003c\/strong\u003e\n- Standard vehicle attachment accessories\n- Pair with the lash loops\n\n\u003cstrong\u003eTie-Down Straps:\u003c\/strong\u003e\n- Motorcycle luggage straps\n- Roof rack tie-downs\n- Compatible with the integrated lash points\n\n\u003cstrong\u003eTSA Locks (small sizes):\u003c\/strong\u003e\n- For luggage\n- Padlock-able lash points\n\n\u003cstrong\u003eCompression Sack Strap Extenders:\u003c\/strong\u003e\n- Add length to straps for extra-large loads\n- Useful for bulky winter gear\n\n\u003cstrong\u003eDry Bag Liners:\u003c\/strong\u003e\n- Inner bag for extra-waterproof items (electronics, clothes)\n- Layered protection\n\n\u003cstrong\u003eVehicle Cargo Nets:\u003c\/strong\u003e\n- Roof rack or motorcycle attachment\n- Pair with the compression bag inside\n\n\u003cstrong\u003eSTS Evac Bikepack Dry Bag Set (sister product):\u003c\/strong\u003e\n- For bikepacking-specific bike-mounting\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SPECIFICATIONS PANEL --\u003e\u003cdiv class=\"tab-panel specs-panel\"\u003e\n\u003cp class=\"spec-category\"\u003ePerformance\u003c\/p\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBest Use\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCompress sleeping bags\/clothes · Motorcycling overland · Kayak\/paddle sports · Roof rack cargo · Snowmobiling · Bikepacking (small)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eActivity Tier\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eHeavy-Duty (rugged fabric + compression features)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eHydrostatic Head\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e\n\u003cstrong\u003e10,000mm\u003c\/strong\u003e (heavy rain\/spray\/crossings — not submersion)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e100% Nylon + 100% Hypalon (closure) + 100% Polyformaldehyde (buckles) + 100% Nylon (webbing)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eShape\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e\n\u003cstrong\u003eOval\u003c\/strong\u003e (efficient packing vs round)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCompression\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eYes (4 straps — 2 ladderlock, 2 side-release)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"spec-category\"\u003eConstruction\u003c\/p\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBody\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e\n\u003cstrong\u003e420D TPU-laminated ripstop nylon\u003c\/strong\u003e (10,000mm hydrostatic head)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBase\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e\n\u003cstrong\u003e500D CORDURA®\u003c\/strong\u003e eVac Fabric (air-permeable waterproof — air OUT, water IN)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eClosure\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e\n\u003cstrong\u003eHypalon non-wicking roll-top\u003c\/strong\u003e (doesn't wick water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eSeams\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eDouble-stitched + reinforced + tape-sealed (3-layer waterproofing)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBuckle\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e\n\u003cstrong\u003ePatented Field Repair Buckle\u003c\/strong\u003e (15mm Polyformaldehyde) — user-replaceable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eLash Points\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eYes (multiple 100% nylon webbing loops)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eInterior\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eWhite TPU laminate (gear visibility)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"spec-category\"\u003eSizes \u0026amp; Dimensions\u003c\/p\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003e8L (Small)\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eSKU A4215-19 · 16.5 × 19.8 × 37.5 cm \/ 6 × 8 × 15 in · 220 g \/ 7.8 oz · $59.95\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003e13L (Medium)\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eSKU A4216-19 · 19.7 × 21.7 × 44 cm \/ 8 × 9 × 17 in · 237 g \/ 8.4 oz · $69.95\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003e20L (Large)\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eSKU A4217-19 · 24.5 × 26.9 × 46.3 cm \/ 10 × 11 × 18 in · 310 g \/ 10.9 oz · $79.95\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003e35L (Extra-Large) — THIS\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eSKU A4218-19 · 28 × 31.7 × 57.2 cm \/ 11 × 12 × 23 in · 370 g \/ 13.1 oz · $89.95\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"spec-category\"\u003eProfile\u003c\/p\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBrand\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eSea to Summit (Australian outdoor gear, founded 1983, Boulder CO US HQ)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCategory\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCompression Sacks \/ Dry Bags \/ Heavy-Duty Storage \/ Vehicle Luggage\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eLaunch\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e25UpdatedProduct (25 = year + Updated) — May 2025 carryover\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eAwards\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eAward Winning\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003ePosition in STS Lineup\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eHeavy-duty compression dry bag (vs standard DryStorage line) — for vehicle + rugged use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CARE PANEL --\u003e\u003cdiv class=\"tab-panel care-panel\"\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eSubmersion Warning (Per FAQ)\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\u003cstrong\u003ePer STS FAQ:\u003c\/strong\u003e \"The body of the dry bag is waterproof (10,000 mm hydrostatic head). However, avoid submersion since water can seep through the roll-top closure of any dry bag.\"\n\n\u003cstrong\u003eWhat this means:\u003c\/strong\u003e\n- Rain, spray, splashes: OK\n- Stream crossings: probably OK (briefly)\n- Submerged in water: water may seep through the roll-top closure\n\n\u003cstrong\u003eWhy any dry bag fails at submersion:\u003c\/strong\u003e\n- Roll-top closure relies on the roll staying rolled\n- Pressure differential under water can force water through the seam\n- Hypalon is highly waterproof but the seam + closure has limits\n- ALL dry bags have this limitation\n\n\u003cstrong\u003ePractical use:\u003c\/strong\u003e\n- Don't depend on the dry bag for underwater protection\n- Use the bag INSIDE other waterproof containers for critical items (electronics, etc.)\n- For submersion, use dry boxes or sealed pouches\n\n\u003cstrong\u003eCritical items:\u003c\/strong\u003e\n- Phone, camera, documents → use additional waterproofing\n- Sleep gear + clothing → fine in dry bag (just stay above water line)\n- The dry bag is for keeping items dry in normal wet conditions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eField Repair (NEW SECTION)\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\nThe HD's design supports field repairs:\n\n\u003cstrong\u003ePatching tears:\u003c\/strong\u003e\n- Use Tenacious Tape or nylon repair tape\n- Apply to clean, dry surface\n- Round the patch corners (no sharp tape corners to peel)\n- Apply to both sides of a tear for strength\n\n\u003cstrong\u003eField Repair Buckle replacement:\u003c\/strong\u003e\n- Standard STS replacement buckle (15mm)\n- Pin removal: use a small flat-head screwdriver or even a fingernail\n- Snap in the new buckle (it's designed to click in)\n- Test by pulling firmly\n- No replacement tools needed\n\n\u003cstrong\u003eSeam leaks:\u003c\/strong\u003e\n- Less common (tape-sealed construction)\n- Apply seam seal over the affected area (SilNet or similar)\n- Field-fix and continue the trip\n\n\u003cstrong\u003eeVac base damage:\u003c\/strong\u003e\n- The membrane can be damaged by sharp objects\n- Patch with repair tape\n- Loss of breathability = loss of compression feature\n- Can still be used for water protection, just can't squeeze air out\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eCleaning\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\u003cstrong\u003eRoutine cleaning:\u003c\/strong\u003e\n- Mild soap + warm water\n- Soft cloth or sponge\n- Wipe down exterior + interior\n- Air dry fully before storing\n\n\u003cstrong\u003eAvoid:\u003c\/strong\u003e\n- Harsh detergents or bleach (degrades TPU + Hypalon + eVac)\n- Machine washing (agitator damages seams)\n- High-pressure sprays\n- Storing wet (mildew)\n\n\u003cstrong\u003eCleaning the eVac base:\u003c\/strong\u003e\n- Same care (mild soap + water)\n- Don't scrub the laminate (removes the membrane effect)\n- Allow to dry fully (the laminate needs airflow to dry)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eCompression Use Best Practices\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\u003cstrong\u003eDon't over-compress:\u003c\/strong\u003e\n- Down\/synthetic insulation loses loft if compressed for weeks\n- Long-term compression = irreversible loft loss\n- Short-term compression (trip use): fine\n- Long-term storage: leave uncompressed\n\n\u003cstrong\u003eUse only soft items:\u003c\/strong\u003e\n- Compression straps are designed for soft items (sleeping bags, clothing, etc.)\n- Don't compress rigid items (cameras, electronics) — straps can damage\n- Mixed loads: put rigid items in separate bags inside the compression sack\n\n\u003cstrong\u003eDo compress:\u003c\/strong\u003e\n- Sleeping bags (down or synthetic)\n- Puffy jackets \/ insulated clothing\n- Soft camping gear (towels, sleeping pads)\n- Clothing in general\n\n\u003cstrong\u003eDon't compress:\u003c\/strong\u003e\n- Hard cases (use a different bag)\n- Inflatable items (pad, pillow — use pump sack instead)\n- Fragile items that can't handle pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eStorage\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\u003cstrong\u003eBetween trips:\u003c\/strong\u003e\n- Clean and dry before storing\n- Store loose (open the compression straps partway)\n- Store in cool, dry place\n\n\u003cstrong\u003eLong-term storage:\u003c\/strong\u003e\n- Store LOOSE (compressed for months = damaged insulation)\n- Hang from a hook if possible\n- Or store in a bin without compression\n- Periodically air out (every few months)\n\n\u003cstrong\u003eAvoid:\u003c\/strong\u003e\n- Storing tightly compressed long-term\n- Direct sunlight (UV degrades nylon)\n- High heat (degrades TPU + Hypalon)\n- Moisture + sealed storage (mildew)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eAvoid These Failure Modes\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\u003cstrong\u003eDon't:\u003c\/strong\u003e\n- Submerge the bag expecting it to remain dry\n- Compress for long-term storage (degrades insulation)\n- Drag the bag on rough surfaces (abrasion)\n- Use harsh chemicals on TPU or Hypalon\n- Machine wash or machine dry\n- Store in direct sunlight for weeks\n- Overload beyond the compression straps' capacity\n- Force the buckle (snaps the field-repairable pin)\n\n\u003cstrong\u003eCommon failure points:\u003c\/strong\u003e\n- Roll-top closure (forgetting to roll enough)\n- eVac base (puncture from rocks)\n- Buckle pin (wear over time)\n- Strap webbing (frays at stress points)\n- Field patches fail (re-patch in better conditions)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eSustainability \u0026amp; End-of-Life\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\u003cstrong\u003eRepair-friendly design:\u003c\/strong\u003e\n- Patented Field Repair Buckle = replaceable\n- Patchable fabric\n- Modular components\n- Built for longevity, not replacement\n\n\u003cstrong\u003eLong service life:\u003c\/strong\u003e\n- 5-10+ years with proper care\n- One HD dry bag replaces many disposable bags\n- Lower lifetime waste per use\n\n\u003cstrong\u003eAt end-of-life:\u003c\/strong\u003e\n- Nylon + TPU + CORDURA® can be specialty-recycled\n- Hypalon difficult to recycle\n- Most outdoor gear ends in landfill\n\n\u003cstrong\u003eRepair culture:\u003c\/strong\u003e\n- One Field Repair Buckle extends bag life by years\n- Patch kit is reusable\n- Most damage is field-repairable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eActivity-Specific Tips\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003e\n\n- \u003cstrong\u003eSleeping bag compression:\u003c\/strong\u003e Primary use. Strap compression saves 30-50% of bag volume.\n- \u003cstrong\u003eMotorcycle luggage:\u003c\/strong\u003e Lash to rear rack with bungee cords. White interior for night visibility.\n- \u003cstrong\u003eKayak storage:\u003c\/strong\u003e Stash in hatches, lash to deck if smaller sizes.\n- \u003cstrong\u003eRoof rack cargo:\u003c\/strong\u003e Stack multiple sizes. Lash to cargo basket.\n- \u003cstrong\u003eSnowmobiling:\u003c\/strong\u003e Cold-resistant Hypalon closure. Rugged body handles impacts.\n- \u003cstrong\u003eBikepacking\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sea to Summit","offers":[{"title":"Jet Black \/ 8L","offer_id":52743306707264,"sku":"A4215-19","price":59.95,"currency_code":"USD","in_stock":true},{"title":"Jet Black \/ 13L","offer_id":52743306740032,"sku":"A4216-19","price":69.95,"currency_code":"USD","in_stock":true},{"title":"Jet Black \/ 20L","offer_id":52743306772800,"sku":"A4217-19","price":79.95,"currency_code":"USD","in_stock":true},{"title":"Jet Black \/ 35L","offer_id":52743306805568,"sku":"A4218-19","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7487\/5549\/files\/A4215-19_992358c0-3cbe-4457-abe6-ce8ee5362a3d.jpg?v=1783364302","url":"https:\/\/spokex.com\/products\/sea-to-summit-evac-heavy-duty-compression-dry-bag","provider":"SX Collective","version":"1.0","type":"link"}