Stanfield's Tall Two-Layer Long UnderwearExperience ultimate warmth and comfort with our durable big & tall wool blend long underwear featuring a unique two layer jersey knit fabric, designed 3 inches longer in the leg for a perfect fit that lasts. Inner layer is a blend of 50% cotton and 50% polyester The outer layer is a blend of 50% Merino wool and 50% polyester The space between layers acts as an insulating layer trapping warm air from your body and keeping you warm. The combination