It’s quite heavy fabric, so just the one layer is sufficient. The good thing is that you can color set it, so it can be washed.
There’s a “3D” mask pattern that gives a large area for adding a message.
The last one I made said:
This is a
MIND CONTROL
Device
Another said:
I’d like my
FREEDOM
Back now
I could make little patches to pin to my useless mesh ‘masks’, maybe.
;D