Review (4/5): Works as described
I've only used this for about two weeks. Three times a day and while I haven't noticed a considerable difference, I am sure that with more use my sight double chin will tighten up. It is easy to use and can be used pretty much at anytime when you're not having to talk. The lanyard it convenient and keeps it from falling on the groundc if it were to slip from your mouth. It's comfortable to use as well and up definitely have a sore jaw after. Good product.