Durable & Easy To Clean Reusable and machine washable. Made from seamless microfiber polyester to provide lightweight durability, wrinkle resistance, stain resistance, as well as great stretch and flexibility while always retaining its shape. ZERO slip + Pressure Release guaranteed: Arm Compression Sleeves are carefully crafted with Segmented Weave technology, with minimal exterior stitching for optimal comfort and grip. NO rub, NO slip, NO itch. The ergonomic design is knitted to not only provide comfort and protection - but expertly release pressure during strenuous exercise and activities. Superior Cooling: The sunscreen arm sleeve is ice silk fabric, which helps to cool your skin for 3 hours after absorbing sweat or water. It is the exact provides you with the cooling and comfortable feeling throughout the whole hot days. Cooling & UV Protection: Our UPF 50+ Arm Sleeves can block up to 98 percent of rays, which is a fantastic accessory to add to your sports gear wardrobe because they can help make your sports activities more enjoyable and free. Comfortable & Durable Cooling Arm Sleeve is made of durable, weather resistant and stretchy material.Arm Covers are chemical FREE and completely safe for you and your kids.Our sleeves are incredibly durable and stretchy. Easy to machine wash and hang dry.