Clive is not very precise. He says that he is wearing a "duvet coat", but in fact, he is wearing a down coat. A duvet is a "comforter" to put on top of a bed.
His coat and a duvet contain down. What is down? If you look for down in a dictionary, we see it has 25 meanings as an adverb and an adjective. But "down" is also a noun. Look at the picture. Down is soft, fluffy feathers, perfect for making warm clothing and duvets!

Clive uses one adjective to describe his down coat. What is it? Listen carefully. Type it.