Helly Hansen LIFA Merino Midweight Pants keep you warm and dry during any type of cold weather activity, so you can get outside and stay outside longer; combining a 100% merino wool layer with proven LIFA fiber technology in a 2-layer construction. LIFA Merino Midweight delivers all the breathable, natural warmth of merino, plus the unique moisture management properties of LIFA fibers. These base layer pants come in cool prints and are fitted for optimal mobility without bulk.