Actually, I changed to a Swift FX about a month ago. I can't find where to change it in my profile!!!!! My strap was riding up in the back, so I put a piece of the loopy, stiff velcro along it at the suggestion of someone on this site. I cannot believe what a difference it made. No leaks, didn't rid...

Oh . . my. . . GOSH!!!!!!!!!!!!!!!! I owe someone a hug THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!!! I slept through my alarm this morning with my mask intact for the first time years.