Add the Cocoon Microfleece Mummy Liner to increase any mummy bag temperature comfort rating up to 11F. Makes a great summer weight sleeping bag. Keeps your sleeping bag clean and extends its life. Microfleece keeps you warm, even under wet conditions. Sleeping bag liner for mummy shaped sleeping bags. Keeps the inside of your bag clean and extends its lifespan. Adds insulation and comfort. Lightweight and compact microfleece transport humidity quickly to the surface, dries extremely fast and is practical in wet conditions. Use as a stand alone sleeping bag in warm weather. 2 way YKK zipper for coupling to another Microfleece MummyLiner. Drawstring hood. Wide top opening. Boxed foot end. Completely double stitched. Nylon stuff sack. Size: 86x32 tapering to 24. Wt. 1lb. 4oz. Stuff size: 6 x 9.5.