The versatile LIFA® Merino crew adapts to any type of cold weather. We combined a 100% merino wool layer with our proven LIFA® Stay Warm Technology in a fitted 2-layer construction. LIFA® Merino Midweight Crew Base Layer delivers all the breathable warmth of merino wool fibers, plus the unique moisture management prope Helly Hansen - Women's Lifa Merino Midweight Crew