Our premium thermal underwear for women is made from silky soft merino wool and with touch of LYCRA® for the perfect fit. Complete your layered look with our women's underwear and stay warm and dry in any environment. Our thermal underwear for women is made from lightweight, odor-resistant merino wool making them perfect for travel. Silky soft against your skin, our women's underwear is the perfect addition to cold weather gear. Look hot and stay cool with our selection of underwear for women. Merino wool preserves body heat while remaining ultra-lightweight. Used in layers it traps warm air between your base layers, mid layers and outerwear, providing you with heightened comfort and warmth no matter what activity you're pursuing. Be sure to check out our other merino wool clothing for women like t-shirts, sports bras, tank tops and more. Stock up on thermal underwear for women today.