NIKE Womens Dri-Fit AeroReact Running Shirt 686957 78% Polyester/22% Nylon Imported Machine Wash Dri-FIT 78% POLYESTER 22% NYLON Dri-FIT fabric reacts to sweat vapor and adjusts accordingly. Articulated seams map the natural contours of your body. Deep rounded hem vents for a flattering fit. Raglan sleeves for excellent range of movement.