How to choose the duvet cover
You should choose the duvet cover with the hidden zipper placed at the edge/back of the cover. There are 3 advantages to using hidden zippers on duvet covers:
- A regular zipper（not hidden）placed on the surface/edge of the duvet cover can break or weaken the sense of luxury of the cover.
- Hidden zippers are covered with a layer of silk which makes them less likely to cause abrasions on your skin.
- The cover that protects your skin also protects the zipper from breaking, granting a longer-lifespan to the zipper and less trouble for you.