Not Impressed.  Too large in size to use.
I dont think the picture description is very fitting for this.  The jaw piece is a lot larger in person than how it looks in the womans mouth in the picture.  I found it to be HUGE.  I could barely fit it in my mouth.  I have to overextend my jaw just to try to slide it in there and it does not fit comfortably at all.  I wish that this product worked for me because I really want to start exercise my jaw but this one simply just is WAY too LARGE!  This might work for someone who has a very large mouth and can open their mouth very big.
Rating: 3 stars