I tried the Zeo under and above my mask forehead support with no success. In both cases when I adjusted my mask the Zeo would move--not good.
First remove the gel support from the mask and cut a piece of material, about 3” x 3/4” (folded to required thickness) and put in place of the gel. When the Zeo is held against the shim material it should ride above the 4 plastic clips. Remove the material and secure in place with some double sided tape. A cut down Pad-A-Cheek will add more padding if required.
Put the Zeo headband on and then your mask, the Zeo does not have to be very tight as the mask forehead support puts pressure on the Zeo. Wiggle your mask around and the forehead support should now slide on the Zeo and the Zeo should not move.
Don’t know if this will work with other masks, but it’s worth a try.
A T

