Sea to Summit Mummy Travel Liners Use a Mummy Liner to protect your sleeping bag investment. Mummy Liners add warmth and comfort to your sleeping bag, whilst protecting it from dirt and body oils. ASilk MummyLiner will extend the life of your bag by eliminating the need for frequent washings, which is how most bags are damaged.
Perfect to keep your sleeping bag clean, for extra warmth or ideal for warm nights on its own.