Earsavers for Educational use

Update: Two new designs - Cat ears and horns! Also, I slightly changed the shape of the ear piece because I was getting some sore spots with tight ear loops with the original design.
Case studies!
I have a friend with hearing aids who swears by this earsaver - it keeps his ear loops from interacting with his hearing aids - says it is a game changer for him.
I also have had PE teachers who appreciate it - unlike other options - it doesn't slide around when they are leading classes in a mask.
It fits nicely under a sock cap which is nice for people who don't want it to show.

Original post:
I am a teacher with students who are in class all day several days each week. I looked online for Earsavers that would work for sensitive ears, and found existing solutions lacking in a number of ways.
Problems with existing designs
1. If you have short hair and no bun - many styles slide down the back of your head leading to a loose and gappy face mask.
2. Many designs are so thick th