Discover warmth from within with our bio-warming HEATTECH technology. - These shorts are made from soft, stretch fabric that retains its shape over time. - Moisture-wicking, antimicrobial and anti-static properties keep you feeling fresh and comfortable. - We've made the waist and inseam slightly longer to offer extra protection from the cold. - The waist is made with a high-rise, double layer to keep in the heat. - These shorts are thin and lightweight to keep you warm without feeling bulky.