The Ladies Helly Hansen Ice Crew Base Layer Top is part of the HHWarm™ range & is therefore the perfect choice for use in sub zero environments. It consists of two layers which perform different functions. The inner LIFA layer is designed to wick moisture away from the skin & ensure you stay dry during periods of high activity while the soft outer Merino wool layer adds exceptional warmth & comfort. To complete the package chaffing is reduced by the use of flat lock stitching & low bulk cuffs.