Nike DriFIT ADV TechKnit UltraMen39s ShortSleeve Running TopULTRA BREATHABLE ULTRA COOLLight like air Cool like a breeze The Nike DriFIT ADV TeckKnit Ultra Top uses breathable sweatwicking technology to help keep the heat out and let you focus on the road ahead Its advanced design is geared for movement so you can fly freely through your stride This product is made with 100 recycled polyester fibersLess Sweat Better FeelNike DriFIT ADV technology combines moisturewicking fabric with advanced engineering and features to help you stay dry and comfortable Minimal seaming gives you a soft smooth feelCool Down In Hot ZonesBreathable knit fabric at the chest upper back and sleeves helps keep air flowing for a cool feel as you run We tested real runners like you to discover where you heat up the most helping us place ventilation in key zonesThe Look of a ClassicThe top39s knit structure forms the iconic Nike chevron at the front nodding to the look of the Windrunner jacket from 1978More Details100 polyesterMachine washImportedNot intended for use as Personal Protective Equipment PPE