The Terramar Women's Thermasilk Pointelle Pant is a popular choice for women looking for a lightweight and breathable flannel base layer bottom. These pants are made from a blend of silk and spandex, which provides excellent moisture-wicking and temperature regulation properties. The flannel lining adds extra warmth and softness, making them perfect for layering under clothing. With its pointelle design and feminine fit, these pants are both stylish and functional.