80% Polyester, 20% Cotton Imported Pull On closure Machine Wash Skin Fabric -- Long john set is made of 80% polyester, 20% spandex blends that feels ultra soft and comfy, offers breathability allowing odor to escape, delivering a comfortable and chafe-free fit against your skin Great for Layering -- This base layer set has a snug fit, making it your next-to-skin layer, great for lounging around the house when it's chilly Breathable & Stretchable -- Breathable fabric wick away sweat fast to keep you dry and light. no need to worry about that sticky feeling as you work out or lounge at home. The stretch fabric provide flexibility and full mobility in all your activities Keep You Warm -- Without being too thick or heavy, gives you the needed warmth, Elastic cuffs at the wrist and ankle, waistband traps body heat, keep you warm from top to bottom on cold days Top & Bottom Set -- Long johns included a long sleeve top and a pair of full-length pants