Good quality duvet

What I like the silk quilts is that while being thin and lightweight, they provide an incredible heat. The one I bought in China there are now ten years still serves me today. In addition to a similar heat the quill pen, she was breathable, meaning that you could use it in summer! I do not understand how it worked, but it worked. Except it was very expensive.
Suddenly, I was skeptical when I saw the price that corresponded roughly to that displayed in the middle kingdom.
And yet, it sure looks to be a real silk duvet. After a few days of use, the heat is there. It is even more important than the old comforter. It's breathable too, I have not transpired.
The bad point is that it makes noise. The membrane is very rigid and it cracks at the slightest movement. Maybe it's the fact that it is new?
If this strength is fading with time, I will give him his last star as deserved.