Pro Dri-FIT Tank TopEXTRA BREATHABILITY WHERE YOU NEED IT MOST. The Nike Pro Dri FIT Top hugs you in lightweight fabric with breathability built into high heat zones to keep you cool and dry from warm ups to cool downs. Stretchy fabric made from at least 75% recycled polyester fibres comes in a tight fit that easily layers under other tops. Built In Breathability Mesh over high heat areas at the back and sides lets air flow to help keep you cool when the action heats up.