MummyLiner Extremely lightweight, tapered sleeping bag liner that keeps your sleeping bag clean and adds insulation and comfort. The premium quality organic cotton is grown by Indian farmers. The fine and lightweight fabric made from this cotton is durable, breathable and soft to your skin. The premium quality organic cotton is grown by Indian farmers. The fine and lightweight fabric made from this cotton is durable, breathable and soft to your skin. Cocoon - Sleeping bag liner forest shade