adidas Performance Men's Aero Knit Long Sleeve Tee 65% Polyester/35% Cotton Imported Ventilated climacool keeps you cool and dry Breakthrough breathability: Ultra-breathable burnout fabric helps keep you cool so you can train harder Accelerated drying: Quick-dry layer draws sweat away from your skin Supreme comfort: Rich, premium-blend fabric provides ideal comfort for longer training sessions Crewneck provides full coverage Back neck tape for a smooth feel Regular fit