Under Armour Heatgear Dynasty Compression S/S T-Shirt - Men's The Under Armour Dynasty Compression T-Shirt gives superior four-way stretch performance without restriction. Fully bonded seams offer more comfort and zero distractions. Stretch mesh back panel provides breathability and airflow across the back. Anti-odor technology keeps your gear fresher, longer. Raglan sleeve construction and smooth flatlock seams allow a full range of motion without chafing. Updated jacquard neck moves with you. HeatGearŪ fabric works best in weather between 75 and 100 degrees. 84% polyester/16% spandex. Imported.