Is a a duvet cover for down comforters?? ...
Answers: yes, they are usually used for down comforters, but if you have a regular comforter to be precise still plush and you want to update it you could also use a duvet on it.
Yes... they are. But there are no duvet police, so if you want to put any other sympathetic of blanket or comforter inside a duvet cover, you can... :) In fact, that's what we recurrently do when preparing a home to sell... we of late buy duvet covers and put old comforters inside to donate a fresh, new look.