Polly Mute for Viola Black

Love this. Doesn’t rattle when not in use

Well, it seemed like a good idea. Unfortunately, these do nothing to mute neither my viola nor my son's viola.

Easy to install, slides on and off quickly for nice deepening of the tone

Really, the best mute I've ever used... doesn't slide around or make noise. I hear the black ones can leave markings on your bridge, but the ones that are white do not.