Two-layer engineeringTraps air between layers providing a natural barrier of warmthFull button front Union Suit with single button rear flapInside Layer: 100% combed ring spun cottonOutside Layer: 65% combed ring spun cotton, 25% MERINO WOOL, 10% NylonFabric weight: 6.6 oz.Tagless design and flat seams provide smooth fit and extra comfortSoft cotton next to skin
