Sun UV Protection: These arm sleeves feature advanced UPF 50+ technology, blocking over 98% of harmful UVA and UVB rays for comprehensive sun protection. Helps reduce the risk of sunburn. Cooling & Comfortable: Made from high-quality microfiber fabric (90% polyester, 10% spandex), these arm sleeves offer excellent breathability and comfort 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 ing, these compression arm sleeves resist fraying and tearing, even after repeated use and washing for long-lasting wear. One Size Fits Most: Measuring 15 inches in length and stretching up to 47 inches, with an upper arm circumference that stretches from 3.7 inches to 8 inches, these sleeves provide a secure, flexible fit suitable for most men, women, teens, and adults. Wide Application: Ideal for outdoor activities such as running, golf, cycling, fishing, gardening, football, basketball, tennis, and more. The black design also offers a practical option for covering tattoos while in the sun.