Spandex,NylonSun Protection Arm Sleeves (2 Pairs) - Say Goodbye to sunburn & sunscreen With the newest UPF 50 protective technology, sun protection arm sleeves offer your arms an all-around sun protection. Get these and block the sun once and for all when you are running, golfing, cycling, driving, fishing, or working in the hot sun for many hours. NO blisters and peeling skin, MORE easiness and fun.Cooling & Comfort - Making of cooling material (92% nylon and 8% spandex), these cooling arm sleeves are a game changer to offer superior breathable and comfortable experience in the hot summer. By absorbing sweat and wicking moisture away, you canfeel the difference when your arms stay fresh all day instead of being hot and sticky. Perfect for playing baseball, volleyball, basketball and football to help you focus on the game.Seamless & Durable - Unlike other sun sleeves that make you itchy and leave embarrassed imprints all over your arms, these sun sleeves are made by seamless weaving technique. With elaborate sewing and high-quality articulated seaming, the fabric is reinforced and won't unravel or tear easily even washed for long times(recommend washing with laundry bag). We make sure you'll be comfortable and happy.One Size Fits All - These protective sun sleeves are unisex and incredibly durability and stretchy to make sure they fit all sizes of arms for men and women. They simply cover your arms like a second skin without much pressure but won't slide down a bit.No need to struggle with picking a correct size as these sleeves adapt to your arms themselves.Ideal for Outdoor & Indoor Sports - arm sleeves are ideal for outdoor & indoor activities such as jogging, biking, climbing, gardening and so on. If you have any questions, please feel free to contact us.