this review title is: zero stars completely unusable and the content is: 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 could not even get it to stay put when walking they are completely unusable i would give them zero stars if it were an option.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.