By far the best ever mouth guards on the market. They mold to your teeth better than anything else out there and the protection is like a shield with out the thickness, since its a really hard, strong plastic versus the rubber ones. I have been hit in the mouth a few times with sticks and I feel it does its job very well. I love how you never need to take it out to breath well, as when breathing you can barely tell its even in there. It just molds perfectly to your teeth and you barely realize you have it on. I highly recommend.