Duofold by Champion Mens Thermals Mid-Weight Base-Layer Underwear_Winter White 6-oz. 60% cotton (for softness)/40% polyester (for durability) Imported 6-oz. 60% cotton (for softness)/40% polyester (for durability) Soft texture-rich knit traps air between two thermal layers. Result: a chill-blocking barrier that keeps you comfortably warm. Tag-free elastic waist wicks moisture for added comfort. Ankle length with chill-blocking rib-knit cuffs and non-chafe flat-locked seams. Close-to-body fit with convenient front fly.