The Helly Hansen Women's Lifa Merino Baselayer Crew is a top-rated synthetic base layer top that combines the benefits of synthetic and merino wool fabrics. The Lifa technology wicks away moisture from the skin, while the merino wool provides natural insulation and odor control. This crew neck top is perfect for high-intensity activities in cold conditions, as it offers excellent moisture management and temperature regulation. Stay dry, warm, and comfortable with this top-selling base layer.