ColdPruf men's leggings for cold weather are perfect whether worn on their own or as a base, mid, or outer layer. Our Platinum II two-layer thermals for men have been specifically engineered with ColdPruf technology that traps air between layers of fabric to provide a natural warmth shield. Our men's thermal pants offer the desired level of warmth and comfort in very cold to extremely cold weather conditions during mid- to high-exertion activities. Nature's natural warmth fiber, merino wool, is blended with polyester on the outside and combined with CPT Performance polyester on the inside to provide maximum warmth, dryness, and comfort while helping with fabric odor control. The ColdPruf Base Layer product line has been developed for comfort in all cold weather environments, whether at home, on the job, or enjoying the outdoors.