The Smartwool Women's Merino 250 Base Layer Crew is a top-quality base layer top made from merino wool. Merino wool is known for its excellent insulation and moisture-wicking properties, making it ideal for outdoor activities. This base layer top offers a comfortable and breathable fit, with flatlock seams to prevent chafing. It is naturally odor-resistant and regulates body temperature, keeping you warm in cold conditions and cool in warmer weather. The crew neck design provides extra coverage and protection. Choose this base layer top for superior performance and comfort.