Fit39 Arm Sleeves Stay cool and comfortable with Fit39 arm sleeves, made from elastic ice-silk fabric that’s breathable, lightweight, and never stuffy. ❄️ Instant Cooling for Hot Days Crafted with cooling ice-silk material that feels refreshingly cool on contact. Comfortable for extended wear without overheating. ☀️ Full UV Protection for Outdoor Confidence High-performance UV-blocking fabric helps shield your skin from harmful rays. Perfect for cycling, sports, commuting, and daily outdoor use. 💧 Moisture-Wicking & Quick-Dry Performance Efficiently pulls sweat away to keep your arms dry. No stickiness, no heaviness—even during intense activity. 💪 Snug, Flexible Fit That Stays in Place High elasticity conforms naturally to your arm shape. Secure fit that won’t slip or restrict movement during exercise.