Keep your sleeping bag clean and keep yourself comfortable with the Ozark Trail Rectangular Sleeping Bag Liner. The liner is made of a silk touch polyester that is soft to ensure maximum comfort in your sleeping bag. Place the liner inside of your sleeping bag to keep the inside of your bag clean at all times. The Ozark Trail Rectangular Sleeping Bag Liner comes in a convenient stuff sack carry bag that makes it easy to transport to and from any campsite. This product works with most sleeping bags .