Most of the 5-star reviews are "fake"
I gave in to the huge amount of 5-star ratings and clearly fake reviews posted here in July and spent the extra $ to try this (there's only about $5-10 worth of material product, not the $35 I paid). Not only did it not prevent my snoring, but my jaw and teeth were sore/aching after a few days so I stopped using it. Don't believe the hype - these straps are all very similar. If one works for you, then shop to find the most comfy one afterward, but otherwise it's still snake oil - or helpful for a very small % of people out there.
Rating: 2 stars