Aqua-X Seamless Arm sleeve is made of a high functional fabricu2018Aqua-Xu2019 developed by Hyosung, a leading textile company in Korea.Aqua-X has millions of superfine channels on its surface whichenable the quick absorption and emission of the sweat. Its quickdry system offers you a pleasant and comfortable environment forvarious outdoor activities and leisure sports especially in hot andhumid summer. It also features smooth velvety texture by usingmicrofiber material that is thinner than commonly usedpoly-spandex.