VORSPRUNG®Jaw Exerciser, Trainer to Achieve a Sharper Jawline with Three Levels of Resistance - Jaw Trainer for an Enhanced Facial Definition - Pack of 3 with FREE Biting Strips & 3 Necklaces

Appears to be good value and does have desired effect

My honest opinion on these are they a good quality, but the lowest resistance one is no good for an adult. Compress to easy, and the tooth grips slip out. However the other two are perfectly useableI just couldn’t get into using them, but that doesn’t reflect the quality at all.

Kept gagging in these and plastic insert kept popping out making it impossible to use!

Those are very good quality and packaging, easy to use helps to have more flexibility in your jaws don’t know about shopping your faceWish they come a bit stronger as for men are to soft special the beginner, maybe a bit larger would increase the jaws opening.They definitely work and relax your jaws bites

When I opened the box, I instantly washed and used the beginner exerciser. After trying it out, I went back to read the leaflet included. I reached for the leaflet as I was intrigued as to use which exerciser and when. I was disgusted to see two maggots wriggling around the top of the leaflet. They were webbed in and one of them is dead and crusted which means they have been there for quite some time. If this is the standard, I cannot even imagine putting one of these into my mouth. Mistakes are made but this is a serious health and safety violation.

Love these excellent design easy to use only thin is its easy to get to the toughest level pretty quick

Takes some getting use to. Feels strange in your mouth at first. Takes regular use to notice visual difference to your jaw. Nice pack of 3 difference levels of resistance. For the price overall good.

Used these religiously for a couple of months, can’t say I noticed a difference. Would be interested to know if anyone has had success with the