The North Face Base Sun Sleeve
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Men's Base Sun Sleeve
Sun Protection · Men · FLASHDRY™ · UPF 40+ · Recycled Polyester
The Base Sun Sleeve shields your arms with breathable protection from the sun or unexpected cold. Integrated elastane provides stretch and keeps you moving into the unknown—without slowing you down.
UPF 40+ Sun Protection
Built-in Ultraviolet Protection Factor (UPF) 40+ shields skin from harmful UV rays across all covered areas — covers the full forearm from wrist to bicep, blocking sun exposure on long trail runs, ridge walks, paddles, and high-output days where sunscreen wears off and sleeves keep working.
FLASHDRY™ Moisture Management
FLASHDRY™ fabric treatment accelerates moisture wicking to keep you dry and comfortable during high-output activity — pulls sweat off the skin and spreads it across the fabric face for fast evaporation, so the sleeves don't stay soaked against the skin when the pace picks up.
Stretch Construction
Integrated elastane provides full 4-way stretch that moves with the arm through a full range of motion — no binding on high reaches, no riding up the bicep when reaching forward, and no pinch points at the elbow on a long stride or paddle stroke.
Breathable Weave
Lightweight breathable weave lets heat and moisture vapor escape from inside the sleeve — prevents the clamminess that comes from a non-breathable cover-up, and keeps the arm from overheating under direct sun on warm-weather hikes and runs.
Silicone Grip Openings
Branded silicone grip bands at the sleeve openings lock the sleeve in place on the upper arm and wrist — stays put through running, hiking, paddling, and cycling without riding up the bicep or sliding down over the hand, even when sweat or rain would otherwise push a loose sleeve out of position.
Recycled Body Fabric
Body fabric made with 88% recycled polyester — durable construction that reduces landfill waste and the use of virgin materials without sacrificing stretch, recovery, or moisture-wicking performance.
Reflective Heat-Transfer Logo
Reflective heat-transfer logo adds low-light visibility for early-morning and dusk trail runs — catches headlights and headlamps from a distance without the look or weight of a stitched reflective strip.
Versatile Coverage
Pulls double duty as both sun protection and unexpected cold-weather insulation — works on cool alpine mornings when you need a thin thermal layer over a base, and slides easily on or off as conditions change throughout the day without having to stop and dig into a pack.
Sizing
Sizes
XS/S, S/M, M/L, L/XL
Fit Profile
Stretch sleeve — designed to fit snug without binding
Body Fabric
Material
88% recycled polyester, 12% elastane with FLASHDRY™
Construction
Lightweight stretch weave with moisture-wicking FLASHDRY™ treatment
Sustainability
88% recycled content — reduces landfill waste + virgin material use
Sun Protection
UPF Rating
UPF 40+ — built-in UV protection across covered areas
Coverage
Wrist to upper arm
Construction
Sleeve Openings
Branded silicone grip at openings — secure fit, no ride-up
Branding
Reflective heat-transfer logo — low-light visibility
Washing
Machine wash cold on a gentle cycle with like colors — use a mild detergent only. Avoid bleach, fabric softeners, and enzyme-based detergents, which can degrade the FLASHDRY™ moisture-wicking treatment, the UPF 40+ sun protection, and the elastane that gives the sleeve its stretch. Turn the sleeves inside out before washing to protect the silicone grip bands from snagging on other items.
Drying
Hang dry or tumble dry on low heat — FLASHDRY™ fabric dries quickly on its own, so high heat is unnecessary and can damage the elastane and degrade the silicone grip over time. Avoid high heat, which can melt the silicone grip bands and degrade the UPF treatment.
UPF Maintenance
The UPF 40+ sun protection is built into the fabric and lasts the life of the product as long as the fabric remains intact. Avoid stretching the sleeves aggressively when wet, which can compromise the weave density and reduce UV protection over time. Replace the sleeves if the fabric becomes significantly worn or thin.
Silicone Grip Care
Periodically check the silicone grip bands at the sleeve openings — small debris caught in the grip can be removed with a soft brush or by rinsing under warm water. Avoid applying lotions, oils, or insect repellent directly to the silicone grip, which can degrade the silicone over time and reduce grip performance.
No Ironing
Do not iron — the heat will melt the silicone grip bands and can damage the FLASHDRY™ treatment and the elastane. If the sleeves need freshening between washes, hang them in a steamy bathroom or use a garment steamer held at a distance.
Storage
Store flat or loosely folded in a dry place away from direct sunlight — UV exposure over time can degrade the fabric and reduce the UPF 40+ protection. Don't compress the sleeves under heavy gear for extended periods, which can stretch the elastane out of shape and reduce recovery.
Shipping Policy
Components:
All component items (wheels, drivetrains, suspension, brakes, etc.) ship within 2-5 business days of purchase.
Bicycles:
Complete bikes typically ship within 2–3 weeks due to build, tuning, and inspection times. You will receive tracking information as soon as your order is ready to ship.
Riding Gear & Apparel:
Riding gear and apparel orders (helmets, jerseys, gloves, etc.) ship within 2-5 business days.
Returns & Exchanges:
If you received the wrong size or wish to exchange an item, it must be returned in original condition—unused, uninstalled, and with all packaging intact.
For full details, please see our Refund Policy before initiating a return.
