It works, but it "off gasses" a lot! (Chemical odor) needs to be washed several times.
If you have sensitive skin like I do, the chin strap area is made of netting material.  This is slightly uncomfortable for my skin. I solved this problem for me by using a soft piece of cotton material between the netting and my chin. The smell of the strap really is bad.  I suggest that you wash it several times (don't put it in the dryer or by anything hot. Just air dry it. I put mine on a towel rack about 2 feet away from my heat register, so when my heat comes on it gets warm air. It dries fairly quick.  Even after washing it 4 times, I can still smell the "off gassing" coming off material, however,  it is much less.  I really like the strap, and it does work well for stopping snoring and keeping mouth from drying out. Hope my review is helpful.
Rating: 4 stars