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 and skin damage. 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 stitching, these compression arm sleeves resist fraying and tearing, even after repeated use and washing. Provides 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 offer a secure, flexible fit suitable for most men, women, teenagers, and adults. Wide Application: Ideal for outdoor activities such as running, golf, cycling, fishing, gardening, football, basketball, tennis, and other sports. The black design also offers coverage for tattoos while providing sun protection during daily wear or physical activity.