The Under Armour Women's HeatGear Tank is simple, supportive, and built to stay comfortable when the training ramps up. The slightly thicker HeatGear fabric delivers a cool-to-the-touch feel with a smooth, secure fit that stays put under layers or on its own. The tank moves naturally with you while maintaining a close, streamlined feel. Flatlock seams help keep everything smooth and irritation-free, and the classic racerback design gives your shoulders room to move through every rep, stride, or mile.