The women's TriDri performance strap back vest features sweat-wicking fabric and a slim racerback profile to keep you cool, comfortable and moving freely during your workout. Enhanced wicking fabric helps keep you dry and comfortable. Tight fit creates a second-skin feel, ideal for layering. Fashionable racerback design makes this vest a perfect athleisure piece. Fabric 100% Polyester. Weight 135gsm.