(07-17-2021, 10:37 AM)Crimson Nape Wrote: One of the most common things that Simplus and Vitera users make is to over tighten the upper straps. I've found that if you leave these straps loose enough to allow the vertical part of the mask frame to be about 1" (25 mm) away from your eyebrow area face, it will greatly reduce these leaks.I measured and my distance is 1 inch. Please see what I just posted to SarcasticDave94 about the upper forehead straps.
A good start is to review the articles attached to the links in my signature.
- Red
I will read the articles.