Nike Pro Slim LS Training Top Nike Dri-FIT technology moves sweat away from your skin for quicker evaporation, helping you stay dry and comfortable. Mesh over high-heat areas at the back, sides and underarms lets air flow to help keep you cool when the action heats up. Lightweight, stretchy fabric with a vented hem helps you move naturally during high-intensity sets. Flat seams feel smooth against your skin. 92% POLYESTER 8% SPANDEX.