The Nike Pro Tank is made from high-stretch, sweat-wicking fabric to help keep you dry and comfortable during your workout. The open-back design lets you show off your sports bra while letting cool air in when your routine heats up. Quick-Drying Design Dri-FIT Technology moves sweat from your skin to help you stay dry and comfortable. Cooling Comfort An open back with mesh lets the air flow freely to help keep you cool during high-heat sessions. Extended Coverage Slightly longer length helps keep you covered while you bend and stretch.