These arm sleeves are made of ice silk. This material is stretchy and light. It feels cool on your skin. These sleeves are great for hot weather because they are breathable. They have a thumb hole to cover your arms fully. This protects you from the sun s UV rays. A silicone band at the upper arm stops them from slipping. They are perfect for outdoor activities like golf cycling running or fishing. The sleeves are suitable for both men and women. They come in pairs. You should wash them gently by hand or in a machine. Always air dry them. Make sure to check the size chart before you buy to get the right fit.