We've had a lightweight comforter on our bed under our nicer, heavier down duvet for many years. My husband is picky about bed coverings and loves the comforter, but after all this time it was irreparably faded, dingy and starting to tear in spots.
Not wanting to be wasteful and realizing that the "perfect" comforter was going to be hard to replace, I took a chance on this duvet cover set. The price point was hard to beat, and the clean white look is a perfect way to neutralize the old comforter and keep our bedding looking fresh and attractive. 
Now the torn old comforter has a new life inside this cover. It's a bit thin, so if you look very closely you can see the old striped pattern through it, but no one should be examining my bedding that closely unless they're in it! And since we're using it as an underlayer beneath our pretty top duvet, it works perfectly for our needs.