Zero stars. Completely unusable.
These are far too small for my face. They appear to be made for children. Every time I moved my mouth the bracket moved all over and ends up in your mouth. You spend all your time adjusting it. I bought them to use while working out, but I couldn't even get it to stay put when walking. They are completely unusable. I'd give them zero stars if it were an option.
Rating: 1 stars