RELAXED COMFORT WITH VENTILATION. The Nike Pro Dri-FIT Top drapes you in lightweight, sweat-wicking fabric for lasting comfort while you work out. Its open-back design with elastic straps helps keep the air flowing. Sweat-wicking power: Dri-FIT technology lifts sweat away from your skin to help you stay dry and comfortable. Breathable design: open back with elastic straps lets the air flow to help keep you cool when your routine heats up. Extended coverage: curved hem helps keep you covered while you bend and stretch.