100% DryLite Polyester with 3-D meshnD.F. Cut for optimal motionnTagless care labelnVersatile piece great for game jersey, warm-up jersey, or coaches shirtnThe Mizuno Hitter's Warm-Up Jersey is a long sleeve jersey made from 100% Mizuno DryLite Polyester, which transports perspiration vapor away from the body, cooling down body temperature.