Exped's DeepSleep Duo 400 Sleeping Bag 700 Duck Down allows you to sleep like you're at home! It's the snug outdoor comforter for a double bed. Perfect for people who feel constricted in standard sleeping bags and prefer sleeping under a comforter. DreamWalker comforter models are now called DeepSleep. When necessary, the double models can be folded and used as a single bag.Exped guarantees that their down originates from ducks and geese reared in a livestock friendly environment. They are given access to outdoor grazing, a constant supply of water, fodder, and shelter, and are free from force feeding for liver production and live plucking. The down originates from Poland, Ukraine, or Russia. Their German supplier is a traditional, well established company with a 120 year history in the field and is independently certified for the above criteria.