Ideal for skiing, hunting, running or any outdoor activity in arctic climates. Inner pocket on waistband lets you safely store personal items. Body-mapped HEATR(R) in the quads, glutes and hamstrings for add warmth and enhance muscle recovery with ProWikMax(R) throughout for softness and extra warmth. HEATR(R) is a high-tech material developed by WSI that helps keep you up to 40% warmer than other materials on the market. Fibers that are integrated within the fabric expand and heat up as they come into contact with the skin. Since the fibers are integrated in the fabric, they will not wash out. 100% Made in USA