In motion. Stay going strong with this fitted sleeveless t-shirt from Nike featuring Dri-Fit technology. 92% polyester/8% spandex; lining: polyester mesh Machine washable Imported Men's sleeveless, fitted t-shirt from Nike Crew neck Nike logo graphic on chest Vents under arms, down torso and entire back Dri-Fit technology wicks away moisture for increased dryness; helps to stay cool Base layer is designed with 4-way stretch fabrication and reinforced flat-seam construction for mobility and durability