The High Perfromance Compression Arm Sleeve is popular among pro sports players, especially basketball players. This sleeve is very lightweight and includes an effective moisture managment system. This system keeps you cool and dry by wicking perspiration from your arm and rapidly evaporating it. This sleeve also includes compression technology that increases blood flow which reduces muscle fatigue which could protect your arm from serious injuries. Wear what the pros are wearing and benefit from the innovative technologies incorporated in this product.