I use a ff with papcap chinstrap. Alternatively, I use pad-a-cheek's anti-leak strap which is a certainly a strap, but not a chin strap. With some masks, I have used both together.
The reason for using one of these straps is that since the mask must be relatively loose on the face, if you move your head against the pillow while you're turning over at night, invariably my mouth will torque out of the mask slightly, causing a leak. Adding a papcap reduces the likelihood that the mask will torque off my face just from subconsciously turning over or moving during sleep. The mask stays put relative to my face, thus reducing large leaks. Further, I like the papcap because it secures my mouth to a reasonably closed position without pushing my jaw back into my neck, due to its modified restraint angle. Pad a cheek's anti-leak strap works fairly well for similar reasons. It keeps the mask from torquing without pushing my jaw back into my skull. I have had no luck whatsoever with universal or other standard chinstraps.
Still as true today as it was back in 2008...
DreamDiver wrote: ↑Thu Oct 30, 2008 8:04 amMoving around while unconscious can leave you in a position where the mask torques slightly, allowing air to escape and therapy to become useless. When you wake up and straighten out your position, the extraneous hissing might stop, causing you to be entirely unaware that you weren't getting therapy. A papcap ... would help stabilize your mask so it isn't as likely to torque and leak...
