LIFA Merino Midweight Pants perform in any type of cold weather activity. We combined a 100% Merino wool layer with our proven LIFA Stay Warm Technology in a 2-layer construction. LIFA Merino Midweight Pants delivers all the breathable warmth of Merino wool fibers, plus the unique moisture management properties of LIFA fibers. These base layer pants are fitted for optimal mobility without bulk.Fiber content:Shell: 57% Merino Wool, 43% PolypropyleneCare Instructions:Use wool detergent. Do not use fabric softener. Wash inside out. Do not wring.Weight:320g