I had several silk comforters and down comforters that were too hot for summer time.
Bought this comforter a few weeks ago. I have to say I am very satisfied with this lightweight silk comforter. It is indicated that the comforter has a long zipper provided on the duvet (seller is so confidentLOL). Thats true, I found the zipper and was able to pull the silk out to test it. Google it if you dont know how to test the material. I was curious and performed a burning test at home. It smelt like burned hair, looks like genuine (artificial silk or polyester smells like burned paper or plastic).
I have been using this comforter for two weeks and it was perfect, since I hadn't woken up sweating, and it was warm enough under air condition. So far all I can say is I am pretty glad with this silk comforter. Highly recommend.