I purchased a queen size comforter which is over-sized (means standard size duvet cover is too small for this comforter) so I purchased a PG duvet cover to protect the comforter. I've been using it for a couple of weeks so far and love it. I'm deducting a star since this comforter doesn't have a loop (or tie) on the each corner to securely tie with a duvet cover. My comforter shifted inside of the duvet cover so I have to  pull the corner of the comforter to the edge of the duvet cover every now and then. Other than that, it's a great comforter.