4 inches of plush support — like a real mattress on the trail. Eliminates pressure points.

ASTM F3340 four-season warmth. Comfortable below freezing, capable to extreme cold.

Stable, supportive construction — no bottoming out, even with heavy sleepers.

Stuff sack doubles as Airstream HV pump. Inflates without breath moisture in seconds.

Soft stretch-knit surface conforms to body — eliminates pressure points on shoulders/hips.

Solution-dyed, bluesign APPROVED, recycled fabrics. Non-PFAS chemistry. 1% for the Planet.

The Comfort Deluxe uses Air Frame construction — different from the Air Zone construction in the Camp and Camp Plus mats. How Air Frame differs from Air Zone: - Air Frame uses a structured foam + air core — the air column and foam together provide support. The foam is shaped to allow air to flow between sections, providing both insulation and a stable base. Designed for maximum comfort at extreme thickness (10 cm). - Air Zone is body-mapped open-cell foam with cutouts in low-pressure areas. Lighter, simpler, but less plush at higher thicknesses. Why Air Frame for the Deluxe: - 10 cm thickness would be "spongy" without a structured core - Air Frame prevents bottoming-out (you don't push through to the ground) - Stable for all sleep positions and body weights - Still functions as self-inflating (open-cell foam pulls air in) Cross-core design: the internal structure has vertical/horizontal channels that create a stable, supportive feel rather than a single block of foam. Improves both insulation uniformity and pressure distribution.

At 10 cm / 4 in, the Comfort Deluxe is among the thickest self-inflating mats available. Most SI mats max out at 5-8 cm. What 10 cm feels like: - Pressure points disappear (shoulders, hips, tailbone don't touch ground) - Side sleepers float — no hip pressure on the ground - Rough terrain (roots, rocks) disappears under you - Closer to a real mattress than a typical camp pad - Heavier sleepers (250+ lbs) sit ON the foam rather than IN it Compare: - Standard mats: 2.5-5 cm - Premium SI mats: 5-8 cm (Camp, Camp Plus) - Comfort Deluxe: 10 cm — top of market Trade-off: thicker = heavier and bulkier. The Comfort Deluxe weighs 1.9-4 kg depending on size — not backpacking friendly. Designed for base camp, car camping, van life where weight doesn't matter.

At R-Value 7.7, the Comfort Deluxe handles all four seasons including extreme cold. What R-Value 7.7 means: - Spring/Summer/Fall/Winter — full four-season capability - Cold nights (32°F / 0°C) — comfortable - Freezing (20°F / -7°C) — fine, comfortable sleep - Below freezing (0°F / -18°C) — adequate with winter sleeping bag - Deep winter (-20°F / -29°C) — borderline; supplement with closed-cell foam pad ASTM F3340 standard — the industry-wide standard for R-Value testing. All major brands use it now, so the 7.7 number is comparable across Therm-a-Rest, Big Agnes, Nemo, Exped, STS. Why 7.7 vs Camp Plus 5.3: - 5.3 is extended three-season (good to ~25°F) - 7.7 is full four-season (good to ~0°F with a winter bag) - Comfort Deluxe is the warmest STS SI mat - Camp Plus handles warmer shoulder seasons Cold sleepers (run cold, side sleepers, women): the high R-Value eliminates the "cold back" issue common with thinner mats. Stay warm without supplemental insulation in most conditions.

The Comfort Deluxe storage sack doubles as a high-volume pump sack — inflation is done by filling the sack with air and pressing it into the mat. How it works: 1. Connect sack to XPEL valve 2. Fill sack with arm strokes (4-8 cycles for full inflation) 3. Press air from sack into mat 4. Close valve Why this is genius: - No breath moisture — dry air only, no condensation inside mat (cold-weather bonus) - No breath moisture = warmer — breath is 100% humidity, dries mat from inside - Faster than breath — high volume means 4-8 cycles vs 30+ breaths - Multi-purpose — doubles as storage after inflation vs breath-inflating similar SI mats: - Breath inflates with ~37°C humid air - Humid air condenses inside cold mats → damp foam → reduced loft - Pump-sack air is dry and ambient (matches use environment) Practical notes: - The pump is integrated into the stuff sack (no separate piece to lose) - The "HV" (high volume) means each stroke pushes more air - For first-time use, allow 24-48 hours for foam to decompress (factory vacuum pack)

The top surface is a soft stretch-knit that conforms to your body: Why stretch-knit on top: - Conforms to body contours (no pressure points) - Moves with you during sleep (no pulling/tugging) - Warmer feel than smooth fabric (small thermal benefit) - Soft against bare skin (most users sleep in boxers/shorts/base layer) The base fabric is a separate, rugged 75D solution-dyed woven polyester — durable for ground contact. Two-fabric design: - Top: soft stretch-knit (next-to-skin comfort) - Bottom: rugged 75D woven (ground abrasion resistance) - TPU lamination on both (airtight layer) Why this matters: keeps the soft comfort of a knit liner while having the durability needed for rough ground. Best of both materials.

The Comfort Deluxe uses XPEL valves (same as Camp family): Single XPEL (Regular Rectangular Wide + Large Rectangular Wide): - One valve for inflate and deflate - Standard for the single-occupant sizes Twin XPEL (Double): - Two valves — one per side - Each person can adjust firmness on their side independently - Half the inflation time when both partners pump simultaneously - Useful for couples with different firmness preferences XPEL functions: - Inflate — connect pump sack or add breath - Deflate — opens wide for fast air release - Compact deflation — flattens the foam for tighter rolls than standard valves

The included stuff sack loads from the side (not the end), making packing easier: - Slide the rolled mat in - Compress with knee to remove remaining air - Cinch closed Multi-use: as described above, the same sack doubles as the pump sack. STS ships the mat with the sack pre-attached to the valve, ready to inflate on arrival.

The Comfort Deluxe is the most sustainable STS sleeping mat — built from three certifications: 1. Solution-Dyed Fabric: - Pigment is added to the polyester melt before extrusion - Uses ~50% less water and energy than traditional dyeing - Color-fast (won't fade over time) - Reduces manufacturing carbon footprint 2. bluesign APPROVED Materials: - Bluesign® standard verifies chemical safety throughout the supply chain - No harmful substances in fabric, dyes, or finishes - Worker and environmental protections in manufacturing - Traceable supply chain 3. Certified Recycled Fabrics: - Outer fabric uses recycled polyester content - Reduces plastic waste, energy, emissions - Verified through third-party certification Plus: - Non-PFAS chemistry — no forever-chemical water-repellent treatments (PFC-free) - 1% for the Planet member — STS donates 1% of revenue to environmental causes Why this matters: the Comfort Deluxe is positioned as the sustainable premium option for buyers who care about environmental impact alongside performance.

Three STS self-inflating mats span the full spectrum: | Aspect | Camp | Camp Plus | Comfort Deluxe | |---|---|---|---| | Price (Regular) | $89 | $99 | $265 (Rect Wide) | | Price (Top variant) | $99 (Large Rect) | $109 (Large Rect) | $415 (Double) | | Thickness | 4 cm / 1.57 in | 7 cm / 2.76 in | 10 cm / 4 in | | R-Value | 4.2 | 5.3 | 7.7 | | Best Use | Camping, Entry-level backpacking, Paddling | Camping, Car camping, Hunting, Paddling | Overlanding, Car camping, Van life | | Construction | Air Zone (body-mapped) | Air Zone (body-mapped) | Air Frame (structured core) | | Best For | Budget buyers, weight-conscious users | Side sleepers, cold weather | Plush 4-season comfort, base camp | | Weight (Reg/RW) | 840 g | 1050 g (Regular) | 1895 g | | Top Fabric | TPU-laminated polyester | TPU-laminated polyester | Stretch-knit top | | Recycled Fabric | Yes | Yes | Yes (solution-dyed) | | Bluesign APPROVED | No | No | Yes | | Non-PFAS | Standard | Standard | Yes | | 1% for the Planet | No | No | Yes | | Pump Sack | Sold separately | Sold separately | Built-in | | Sizes | 4 (Reg, Reg Wide, Large, Large Rect) | 4 (Reg, Reg Wide, Large, Large Rect) | 3 (Reg Rect Wide, Large Rect Wide, Double) | Choose Camp for: budget buyer, first-time mat, entry-level backpacking, light pack weight. Choose Camp Plus for: side sleepers, three-season comfortable cold, camping focus, balanced weight. Choose Comfort Deluxe for: the absolute plush-est, four-season warmth, van life / base camp, sustainable premium.

Per STS, the Comfort Deluxe is best for Overlanding, Car camping, Van life — the most stationary, weight-agnostic camping styles. Ideal for: - Van life / Overlanding — comfort matters, weight doesn't, daily use - Auto camping — full-size SUV/truck camping, weight irrelevant - Hunting cabin base — long stays, every degree of comfort matters - Family camping in cold weather — R-Value 7.7 keeps everyone warm - Couples / family bed (Double size) — fits two adults comfortably - Yacht / boat cabin — when weight doesn't matter - Guest bed in cabin / spare room — storage and setup are easy NOT ideal for: - Backpacking (any kind) — 1.9-4 kg is far too heavy - Bikepacking — bulk in frame bags is impractical - Thru-hiking — same - Mountaineering — overkill on warmth/weight - Lightweight overnight trips — too bulky when packed Comparison to other high-end mats (non-STS): - Therm-a-Rest NeoAir XTherm (R-Value 7.3, 460g) — much lighter but inflatable-only (no foam) - Big Agnes Divide (R-Value 5+, 850g) — air-only, much lighter - STS Comfort Deluxe = warm + thick + supportive, but HEAVY. That's the trade-off.

Premium Pillows (Aeros Premium, Aeros Ultralight): pair for complete sleep system. STS Stuff Sacks: the integrated pump sack doubles as storage, no extras needed. Tent Considerations: the Double size (198 × 132 cm) requires a large tent. Most 3P tents fit comfortably; 2P tents are tight. Quilts vs Mummy Bags: the rectangular shape and width work well with quilts and blankets. Pair the Rectangular Wide with a 3-season quilt for a station-wagon camping setup.