COOLING AND UPF 50 PROTECTION: With innovative cooling technology and UPF 50 protection to block over 98% of harmful UVA and UVB rays， Cooling Sleeves are more than your average sun sleeve. Expect ultimate comfort and protection wherever adventure takes you.FOR ALL SPORTS AND OUTDOOR ACTIVITIES: Designed for long， hot hours in the sun， our lightweight compression arm sleeves will keep you comfortable whether you're golfing， fishing， basketball， biking， hiking， driving or even in gardening. Perfect for those with an active lifestyleSEAMLESS COMFORT: Unlike other sun sleeves that make you itch and leave imprints all over your arms， these sun sleeves are seamless. We make sure you'll be comfortable and happy.TRETCH FIT AND WASHABLE: Our sleeves are incredibly strong and stretchy. Easy to machine wash and hang to dry. Our stretchy 89% polyester 11% spandex blend makes them perfect for both men and women.