Begins to crumble !!!

Hello everyone.
I have the bellows now since January and was initially also enthusiastic about the wind strength!
Unfortunately, the rough surface of the bellows wears off very quickly and can be found in their own hands again.
I think nothing, because if you are not careful everything distributed on his camera and at the end even if against innendrin.
I also have to spend quite a lot of force to pump a few times!
I can only advise of the bellows!

LG