The Fleece Cover is a rectangle fleece liner that can be used year round - as an accessory or as a standalone bag. It is a great "accessory", even if you already have several bags. It can help add extra warmth on those extra cold nights. As a standalone bag, it can be used in warmer temperatures when you only need a very lightweight bag. It is likely to be too bulky to use as a liner in a sleeping bag, particularly a mummy sleeping bag. I use it as a sleeping bag in temperatures into the 50s F. It is less bulky than a sleeping bag as very machine washable.
