Our LIFA® Merino Midweight trousers keep you warm and dry during all kinds of activities in the cold, so you can get out and stay outside even longer. We combined a layer of 100% merino wool with our renowned LIFA® fiber technology in a 2-layer construction. The LIFA® Merino Midweight Crew in 2-in-1 Base Pant delivers the breathable warmth of merino wool fibers, plus the unique moisture-regulating properties of LIFA® fibers. These underwear pants come with cool trYKK® and are tailored for optimal mobility without bulk.