Thermal underwear is made of two-component material - viscose absorbs and evaporates moisture 1.5 times faster than cotton. Polyester transfers all moisture from the skin to the outside. Anatomic cut that covers all points of critical heat loss: neck and throat area, waist, hips and wrists. Maximum precision of elements due to laser cutting. Flat seams contribute to wear resistance, increase the strength of the structure, and also eliminate chafing and injury to the skin during wear. Anatomical cut and flat, elastic seams increase product strength and create additional comfort.