Styled for runners and outdoor enthusiasts, these UV Arm Sleeves have reflective elements strategically placed for better visibility in low-light conditions. Put them on in the morning to fight the chill, and comfortably leave them on all day for UPF 40+ sun protection. The highly breathable polyester material wicks moisture, is comfortable next to the skin, and blocks harmful rays. Four-way stretch provides light compression and maintains form and shape when wet. The elastic upper with engineered silicone grip holds the sleeve comfortably in place for a clean, streamlined fit. Easy to pull on and off as needed, this light, packable protection carries easily in a pack or pocket.