P10 straps slipping

[acordeon]

I find the P10 mask very comfy in most regards.  My current problem with it is that the split strap that goes over my head, while comfy in general, is always slipping.  Specifically, the lower half of the strap, that goes around the back of my head, is repeatedly slipping up toward the crown of my head, which causes the mask to loosen just enough that I get little leaks around the nose pillows.  This happens especially when I change positions while asleep.  This is waking me up several times a night right now.

Any advice on how to secure that lower strap better?  I don't really want to tighten the strap any more than it is, as I wouldn't want more pressure on my nose.

[Deborah K.]

I would use one-inch wide tape suitable for skin use and apply the tape vertically to hold the strap against your cheek.  I think it would work.