Perfect way to change up your room décor without the expense of having to buy an expensive comforter(duvet) set for each season. It zips open and then you just slide your old comforter inside. It's like a giant zippered pillow case. It even comes with matching shams. So I have the same old comforter, just with a new face lift but without the pain and expense. LOL It's a great deal and comes in colors that you can match with your existing décor....and it's easily wash and dry. With this duvet set, I can change it out as often as I change my mind...you get the idea. It's great!