Keep cool and dry on warm-weather days outdoors with the Under Armour Performance Long-Sleeve Tech Tee. Lightweight 100% polyester UA Tech fabric boasts an ultra-soft, more natural feel for unrivaled comfort. Stretch-mesh side panels - an 88% polyester, 12% elastane blend - offer strategic ventilation to keep you from overheating. The Signature Moisture Transport System wicks sweat away from the body, while anti-odor technology helps prevent the growth of odor-causing microbes so you stay fresher longer. This classic HeatGear t-shirt features a low-profile crew-neck collar; generous arm openings; and a small UA screenprint logo at the left chest. Loose fit. Imported.