The Under Armour Women's Base 4.0 Leggings are a popular choice for women's wool blend base layer bottoms. Made from a blend of polyester and elastane, these base layer bottoms offer excellent warmth, breathability, and moisture-wicking properties. The fabric has a four-way stretch for unrestricted movement and a brushed interior for added comfort. The Base 4.0 Leggings have a wide waistband and flatlock seams for a comfortable fit. Whether you're skiing, snowboarding, or engaging in any outdoor activity, these base layer bottoms will keep you warm and dry.