VERSION V7 IS READY!!!!
I find this version the best to ware and to set up on head

Also easier to print. Because I add extra surface for better grip

OPASKA_V7_185X60mm.stl is for big boys ( higher and longer )

Best alternative I had found is this one
Just ....is less discrete :
https://www.thingiverse.com/thing:4674130
remix of drewlachlan design

This is what You need when You have pain behind your ears
from wearing mask longer than few hours

I designed this for my self and my colleagues at work

We have to wear mask 8 h per day.

I tested many other straps at thingiverse. but they do not spread band wide enough
All had some bigger or smaller flaws

After print cheek for any sharp edges at the inside of strep
You can smooth them out with lighter

Please post a make when You print one

Zonestar

Z10M2

No

No

0.28

100

for fast print