The Women's Helly Hansen Lifa Merino Lightweight Pants are part of the LIFA® Merino Lightweight collection which includes clothing that is versatile and ideal for all cold weather activities. Helly Hansen use a proven 2-in-1 layer system, combining LIFA® Stay Warm moisture management and the natural warmth of merino in an extremely lightweight pair of base layer pants. LIFA® Merino LIGHTWEIGHT delivers all the great benefits of merino wool fibres plus the unique wicking properties of technical LIFA® fibres