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 a soft, comfortable feel during warm weather. The material absorbs sweat and wicks away moisture to help keep arms cool and dry. Seamless & Durable: Designed with precision stitching and reinforced fabric, these compression arm sleeves resist fraying and tearing, even after repeated washing. Provides long-lasting wear and consistent performance. One Size Fits Most: Measuring 15 inches in length and stretching up to 47 inches, with a cuff circumference of 3.7 inches expanding to 8 inches, these sleeves offer a secure, flexible fit suitable for most adults, including men, women, and teenagers. Wide Application: Ideal for outdoor activities such as running, golf, cycling, fishing, gardening, football, basketball, tennis, and other sports. The black design also serves as a practical option for covering tattoos while providing sun protection.