Sun UV Protection Sun protection arm sleeves feature the latest UPF 50+ protective technology for effective UV protection, which can block out over 98% of harmful UVA & UVB rays to provide your arms with all-around UV protection. Say goodbye to sunburn and the need for sunscreen. Cooling & Comfortable These cooling arm sleeves are made of ice microfiber material (90% polyester and 10% spandex), offering a superior breathable and comfortable experience during hot summer days. The fabric's ability to absorb sweat and wick moisture quickly keeps your arms feeling fresh all day, without heat or stickiness. Seamless & Durable The compression arm sleeves are crafted with high-quality fabric and fine stitching. The reinforced material remains strong and will not unravel or tear easily, even after repeated washing. One Size Fits Most The natural length of the arm sleeves is 15 inches and can stretch up to 47 inches. The upper arm circumference fits from 3.7 inches to 8 inches. These sleeves are stretchy and durable, offering a great fit for most body types and sizes, suitable for teenagers and adults of all ages. Wide Application Ideal for all sports and outdoor activities. Perfect for skin protection while running, golfing, driving, cycling, fishing, jogging, gardening, football, basketball, tennis, and more. The black color also works well for covering tattoos.