Helly-hansen Womens Lifa Freeze 12 Zip White . HHWarm fabric is the natural choice to stay warm in sub-zero environments. This base layer features two different layers in one. Constructed of Lifa T3 hollow fiber technology and merino wool to deliver exceptional warmth and moisture moving management at a minimal weight. The inner Lifa fibers ensure you stay dry in all conditions while the outer soft Merino wool adds warmth and comfort. Imported.