Reebok Men's One Series Activchill Bonded Short Sleeve Top Nylon^Spandex Imported This Reebok tee reigns supreme with a super-soft feel, and speedwick Technology for dissipating sweat. odors won't buildup, and the classic crewneck silhouette moves with you 84% nylon / 16% elastane Regular fit - not too tight or too loose Speedwick Technology