I bought it along with the violin as I never playe dbefore violin and didn't know how much noisy would it be.
I play 100% of the time on my home, and when there is my partner, i put on the mute, it fits quite nice and I got really astonished how much quieter it sounds. I can play it next to my partner while she's watching TV and I do not disturb her.
It is made of a very sturdy material, it has fallen to the floor several times and it looks like the first day.
As a con, what I don't like it is that it sounds different, but I guess that it happens with everyother mute as you are putting something on the bridge.