Experience the ultimate in warmth and comfort with Smartwool Women's Merino 250 Base Layer Bottom. These flannel base layer bottoms are made from 100% Merino wool, which provides excellent insulation and moisture-wicking properties. The leggings feature a wide waistband for a secure fit and a flatlock seam construction that minimizes chafing. Whether you're skiing, hiking, or simply braving the cold, these thermal leggings will keep you cozy and dry.