We spent four years perfecting our iM Sports Running Sun Sleeves. Each stitch is sewn with care right here in the USA. Our running sleeves wick away sweat, block harmful UV rays and provide mild compression. Most of the compression comes from the no slip gripper at the top of each sleeve. Compression has been shown to increase blood flow and can reduce next day soreness for some athletes. Our running sleeves can also get wet without any issues. Try a pair of our iM Sports running sun sleeves today!