The Carhartt Women's Base Force Heavyweight Thermal Bottom is a durable and warm base layer pant for women. These pants are made with a blend of polyester and spandex, providing a comfortable and stretchy fit. The fabric is designed to wick away moisture and keep you dry during activities. The pants also have a brushed interior for added warmth and a smooth exterior for easy layering. With a heavyweight design, these pants are suitable for cold weather activities and provide excellent insulation.