Jockey Men's Long Underwear Stretch Waffle Union Suit 60% Cotton / 38% Polyester / 2% Lycra Spandex. Machine wash and dry. Imported. Style 871267 modern styling with rear flap opening classic button-up front extends down the mid-section cotton and polyester fiber blend helps to keep you warm and provides breathability cuffed sleeves and fitted leg openings help retain heat