Fabric:Sunscreen arm sleeve fabric is engineered for cutting-edge performance and comfort, including our exclusive technology that accelerates moisture wicking for a cooler workout and helps keep the fabric fresh Soft, lightweight, breathable, moisture wicking and quick dry to keep you active all day. Uv Protection: Sun damage is truly a problem, in order to avoid exposure skin to sunlight for a long time, especially to protect sun-sensitive skin, extricate yourself from repeatedly applying sunscreen.Our uv sun protection arm sleeves and leg sleeve covers were designed, it is a substantial improvement over sunscreen, whether it is working outdoors at high temp or playing golf, youre covered perfectly. Tattoo Cover Up: Need to avoid exposing new tattoos to strong sunlight?Tattoos need to be covered during working time, but the hot season makes wearing long shirts unbearable?Our tattoo cover up sleeves can perfectly solve these problems.The sweat-wicking fabric allows the new tattoo to breathe under the cover, keeping it cool and dry, and the tight weave allows the tattoo to be well covered. (Only Black Sleeves Can Cover The Tattoo, White Not) 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.