Seamless Elastic Thermal Inner WearFeatures Thermal Wear at 37 degreesMade with the latest heat trapping nano weave that regulates body temperature keeping the body warm at 37 degrees even during the cold season. Warmer than UsualIt is 65% warmer than regular inner wear, more effective and protective. A pair of self heating breathable underwear designed to keep you warm in the cold season. Made with the latest heat trapping nano weave that regulates body temperature at 37 degrees. It