The Baleaf Women's Thermal Fleece Running Tights are a great option for women looking for spandex base layer bottoms that provide warmth during outdoor activities. These tights are made with a thermal fleece fabric that traps heat and keeps you warm in cold weather. The moisture-wicking technology helps to keep you dry and comfortable, while the four-way stretch allows for a full range of motion. The wide waistband provides a secure and comfortable fit. Whether you're running, hiking, or skiing, these thermal tights will keep you cozy and comfortable.