It uses a material called “Comfor Heat®,” which absorbs moisture, generates heat, and maintains the warmth. Its sweat-absorbing and fast-drying properties instantly wick away moisture and dry the fabric. This prevents stuffiness and chills caused by sweating, and maintains a dry, comfortable environment. It fits snugly against the body with a soft, gentle feel against your skin. Cycling underwear for the severe cold of the winter season, compatible for weather of 0°C. The front uses a wind-breaking material called “Wind Shell,” which stretches well and blocks cold air.