Enjoy full freedom of movement and light compression when running with the Nike Zoned Sleeves. These double knit arm sleeves provide light support where you need it and prevent arm vibration and shock, reducing muscle fatigue. In winter, this accessory offers you warmth and compression so you can always run in a jersey and during sunny runs, you will also get UPF 50+ sun protection where the sleeve covers your skin. The sleeves feature Dri-Fit technology to keep you dry and comfortable and have an ergonomic fit for comfort and a snug fit. Features: The double knit design follows the heat map areas of your body for breathability and concentrated support where you need it. UPF 50+ treatment provides protection from the sun in areas covered by the fabric. Nike Dri-Fit technology helps keep you dry and comfortable. Ergonomic knit design hugs your arms for a comfortable fit. Content: 65% Polyester, 22% Nylon, 13% Elastane