Style #: 138756083% Polyester/17% ElastaneImportedOur original, thicker HeatGear fabric helps keeps you protected under your gear—limiting pinching, snagging & chafingMaterial wicks sweat & dries really fast4-way stretch material moves better in every directionErgonomic flatlock seams deliver a comfortable, chafe-free fitLight & tight fit with optimum muscle compression so you can sense where your body is in space