A rolled up duvet.
A down quilt is an example of a duvet.
Origin of duvetFrench down from Old French alteration of dumet diminutive of dum, dun from Old Norse dūnn
From French duvet, from Middle French, from Old French duvet (“down, the feathers of young birds”), alteration of dumet, dumect, from Old French dum, dun (“down, feathers”), from Old Norse dúnn (“down, down feather”), from Proto-Germanic *dūnaz (“down”), from Proto-Indo-European *dhūw- (“to smoke, fume, raise dust”). Cognate with Icelandic dúnn (“down”), Danish dun (“down”), German Daune (“down”). More at down.