Our LIFA Merino Midweight collection is perfect for any type of activity in cold weather. We combined a 100% Merino wool layer with our proven LIFA Stay Warm tech in a 2-layer construction on this zip. LIFA Merino Midweight Base Layer delivers all the breathable warmth of Merino wool fibers, plus the unique moisture management properties of LIFA fibers. Helly Hansen Womens Lifa Merino Midweight 1/2 Zip Features: LIFA MERINO 100% Merino wool exterior Flat lock seams for ideal comfort and durability 2-layer construction Non-itch fabric ZQ wool