Posted by Barb (Seattle) on September 22, 2009 at 10:18:47:In Reply to: looking for a good chin strap posted by nevergiveup on September 14, 2009 at 10:04:30:
I have never had success with chin straps, as my lips always just opened even when my jaw was
clenched tight.i had to go to a full face mask. Works great.