Chill-Its 6690 Cooling Arm Sleeves provide full arm coverage to absorb and wick away sweat, deliver advanced cooling relief, shield skin from the sun's UV rays and even protect against light abrasions. Lightweight performance knit fabric is soft, stretchable and durable. With UPF 50+ protection from harmful UV rays, these sun protective sleeves provide instant cooling relief. They help absorb and dry sweat quickly. Anti-odor treatment keeps funky and unpleasant body odors under control when you're going all out. Machine-washable sleeves come in a pair pack and include two sleeves that fit on both left and right arms.