The Indera Dual Face Raschel Knit Thermal is made from 100% combed cotton outside and 7.5 oz. 100% HydroPur® inside for excellent warmth. This thermal not only keeps you warm but the heavy weight material wicks moisture and has scent blocking fiber to help reduce odor. The extended shirt tail and rib cuffs provides more coverage and keep the cold out. Visit our G&L Clothing Blog for more information on layering with Indera thermal underwear.