Under Armour Women's ColdGear Infrared 65% Polyester, 27% Rayon, 8% Elastane Imported ColdGear Infrared technology uses a soft, thermo-conductive inner coating to absorb & retain your own body heat Material wicks sweat & dries really fast 4-way stretch construction moves better in every direction Flat, yoga-inspired waistband sits just right on your hips