Best device I have used yet.
This is a good product and works better than the expensive anti-grinding device the dentist made me.  The more expensive mouth guard was hard plastic and really hurt my mouth.  This works and is pro-active if you read the instructions on how to train yourself to stop grinding by wearing this one half hour before sleep and sensing and stopping yourself every time you bite into it.  Then wear it for your night of sleep.  I must admit I used to wear the smaller size and it fit perfectly.  But it would fall out in the middle of the night.  So I bought the larger size and it stays in.  A bit of the plastic loops outside of my mouth but I do not care--this works better than anything else I have tried to stop grinding and protect yourself when you do.
Rating: 4 stars