The REI Co-op Women's Midweight Base Layer Bottoms are a popular choice for women seeking a reliable and affordable base layer option. These bottoms are made from a blend of polyester and spandex, offering a comfortable and stretchy fit. The moisture-wicking fabric keeps you dry and comfortable during physical activities. The flatlock seams prevent chafing, making them ideal for all-day wear. Whether you're skiing, snowboarding, or hiking, these base layer bottoms will keep you warm and protected.