UA Women's Long Sleeve Locker T-Shirt HeatGear fabric is ultra-soft and smooth for extreme comfort with very little weight. Stretch-mesh back panel delivers strategic ventilation. 4-Way stretch fabrication allows greater mobility in any direction. Moisture Transport System wicks sweat and dries fast. Anti-odor technology prevents the growth of odor causing microbes. Locker loop makes it easy to hang. 100% Polyester.