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 vents at the hem helps you move naturally during high-intensity sets. Flat seams feel smooth and make it comfortable layered under other tops. 92% polyester 8% spandex Description EXTRA BREATHABILITY WHERE YOU NEED IT MOST. The Nike Pro Top hugs you in lightweight fabric with breathability built into heat zones to help keep you cool and dry from warm-ups through cooldowns. Stretchy fabric made with at least 75% recycled polyester fibers comes in a tight fit that easily layers under other tops