Be prepared for the cold weathers! Keeping warm could not have been any easier. Thermal 2pc sets ideal for : High quality underwear ,Sleepwear, Athletic wear. Includes: Thermal 2pc set 0ne (1) top and one (1) bottom Double layer long knit cuffs . Smooth Knit. Full cut for comfortable fit. Shrinkage controlled for lasting size and shape. Thermal knit retains body heat to keep you warm. Heat-resistant elastic waistband Comfortable ribbed crewneck. 55% Cotton and 45% Polyester. Lightweight but warm.