The LAPASA Women's Lightweight Thermal Underwear is a top-rated option on Amazon for women's modal base layer bottoms. These bottoms are made from a blend of modal and spandex, offering a soft and stretchy fit. The fabric is moisture-wicking and quick-drying, keeping you comfortable throughout the day. The wide waistband provides a secure and flattering fit, while the ankle length design adds a stylish touch. Whether you're layering under your favorite outfit or wearing them on their own, these LAPASA bottoms are a reliable choice for women's modal base layer bottoms.