RP Womens Thermal Underwear Sets Sleeve Vest & 3/4 Length Pants 50% Polyester, 50% Viscose Pull On closure Womens Comforting White Thermal Underwear Set Comfortable And Warm This Full Thermal Set Is Ideal For Wearing During Cold Weather Conditions - Ideally Winter Great For Wearing Under Clothes During Hiking, Skiing And Any Other Outside Athletic Activity Machine Washable