Poor fit, din't work
I have sleep apnea and use a CPAP machine, I only got this to keep my mouth closed to stop the wind tunnel effect it causes and hopefully to stop me from swallowing air in my sleep, that said the strap  that goes around the back of your neck is way too small it had to be so tight just to connect it pulled my jaw back and made me snore with my CPAP machine on. my wife woke me up in the first 5 min of sleep to tell me to take it off. even when I did manage to get it on it had trouble with top strap staying in place and was generally uncomfortable to wear.
Rating: 1 stars