Highly breathable materials and soft, lightweight fabrics. Keep your arms cool and dry to ensure a great wearing experience. Anti-slip elastic band design and finger hole on the top can prevent the sleeve from slipping on the arm easily. 4 colors (Black,White, Gray, Blue) for your choice, suitable for everyone. The cooling shirt is very flexible and easy to wear and take down. Can be used on arms or legs. It can keep cool in the hot summer. Anti-ultraviolet sleeves can block up to 97% of harmful UVA and UVB rays, effectively preventing sunburn and aging. Very suitable for long term outdoor use. The sleeves are suitable for all sports such as golf, cycling, fishing, driving, hiking, jogging,mountaineering, boating, hiking. gardening, basketball, tennis, etc. Can absorb sweat quickly and dry quickly. Specification: Material: nylon + ice crystal Color: black, white, gray, blue Size: 35*8cm Package includes: 4 Pairs Ice Silk Sleeves Features: Ice silk sleeves are made of high elastic fiber fabric. It is specially designed to block harmful ultraviolet rays and protect arm skin. Can be used for outdoor sports or fitness, also can be used for daily wear.