Probably great for a medium to large sized mouth.  Easy to customize
These are pretty easy to customize to fit your mouth, with the easy to follow instructions.  I've been grinding my teeth at night all my life, and I am forever in search of the perfect night guard.  I really was hoping this would be the answer, but they are just a bit too big for my mouth.  I did all the adjusting and trimming, but I was still waking up at night with the dang thing out of my mouth (funny, I don't remember spitting it out!)  The guards I have used in the past that were the most comfortable were pretty thin.  The problem with those is that they don't last me any time at all, and they can be pretty expensive.  The ones that fit just on the front couple of teeth made my teeth shift, and I ended up with dental braces!!  So...this is the kind that I need to wear, so I'm going to give them a try for awhile longer.  I keep trimming on it in hopes that I will get the perfect fit.  If I do, I will be back to report!  I think if you have a larger mouth, then these might work great for you.  I am not a large woman, and I do not have a large mouth.  I received this product at a reduced price in exchange for my honest and unbiased review.  This really seems to be a good product, it just didn't fit my tiny mouth
Rating: 4 stars