TECHNOLOGY THAT YOU NEED. Under Armour micro thread technology in the fabric dries faster, won't cling to you, won't chafe & stretches without absorbing sweat.FEATURES UA micro thread Technology in the fabric dries faster, won't cling to you, won't chafe & stretches without absorbing sweat Signature moisture Transport System wicks sweat to keep you dry & light Lightweight, 4-way stretch construction improves mobility & maintains shape Ergonomic flat lock seams allow you to move free without fear of chafing Shaped hem delivers enhanced coverage without looking big & bulky; 100% Poylester