AQUA-X Cool Arm Sleeve - Cooling UV ProtectionThese arm sleeves are made with innovative cooling technology and protection to block out the UV rays. With millions of superfine channels on its surface, it enables quick absorption & emission of perspiration. You will enjoy a pleasant and comfortable outdoor activities leisure sports especially in hot and humid environment. It's smooth velvety texture with microfiber material is thinner than most common used poly spandex. Specs SEAMLESS COMFORT: The