Ultra Thin Thermal For Women. 95% Modal 5% Spandex. Stretchy, Silky, Soft, Breathable and Well adapts to the body. Machine Wash. Advise to choose Thermal if you are going to be in very cold temperatures. Worn as Basic Half Sleeve Undershirt. Great to wear for sleeping or add an extra layer of warmth under your coat, sweaters, sleeveless smock dress etc.