"Sleeping Bag Quilted Pants" are warm and comfortable, like a sleeping bag. They are made of ultra-thin nylon fabric with a natural, wrinkled finish, and the filling is quilted. We made them with careful attention to the volume of the filling, adjusting it many times so that they don't make you feel bulky or restrict your movement. The wide silhouette has been streamlined, and the hem is ribbed to keep out cold air. These lightweight, warm pants are sure to become a regular part of your everyday wear.