A duvet is a British term for a fluffy comforter. To encourage people to sleep more, the Jurys Inn Hotel Group in the UK made suits made from these soft pieces of bedding. In a way, it's like staying in bed all day. If you ever feel the need to nap, you don't have to search for a bed because you're already in one. Just lie down wherever you are, even if it's in the office or on the Underground.
You can see more photos at a video at Bored Panda.
-via Nag on the Lake