Sun UV Protection: These arm sleeves feature advanced UPF 50+ technology, blocking over 98% of harmful UVA and UVB rays for comprehensive sun protection. Ideal for reducing exposure to the sun. Cooling & Comfortable: Made from high-quality microfiber fabric (90% polyester, 10% spandex), these arm sleeves offer breathable performance and a comfortable fit during warm weather. The material absorbs sweat and wicks away moisture to help keep arms cool and dry. Seamless & Durable: Designed with reinforced fabric and fine stitching, these compression arm sleeves resist fraying and tearing, even after repeated washing, ensuring long-lasting wear. One Size Fits Most: Measuring 15 inches in length and stretching up to 47 inches in circumference, with an upper arm fit from 3.7 to 8 inches, these sleeves provide a secure, flexible fit for most men, women, teens, and adults. Wide Application: Suitable for outdoor activities such as running, golf, cycling, fishing, gardening, football, basketball, tennis, and more. The black style can also be used for covering tattoos. Help protect your skin while enjoying an active lifestyle.