Review (4/5): Pretty good material
Pretty good material, it really gives support to your muscles.
Since I have a small mouth I was worried about the size of this brace training, and about it losing its form because of my forcing it a little bit to fix in my mouth, but I found it easy to manipulate and able to keep its form even if you force it or accidentally put something heavy on it (yes, my little brother placed a big amount of backpacks and toys over it). Plus: It doesn't have a weird taste or something like that.
I already used it for 2 weeks and I'm starting to notice changes on my smile, I'm pretty excited.