Are there any sizes on any of your masks? Or is it one size only, but some run big and some run small. I don't see any size description on the masks, and I was curious what the sizing on this mask is.
David R Masks are one of those things that really have to be tried on to see it it fits.
Most masks only come in one size but some come in a mid size for narrower faces.
This particular mask I would say medium size faces should fit fine.