Batman Ear Saver COVID Surgical Mask Strap extended with extra hooks on each side

thingiverse

This is an outstanding and quirky design by Funbobby2001, available at https://www.thingiverse.com/funbobby2001/about. It's incredibly comfortable to print, with a remarkably smooth process that gets the job done quickly. My only gripe is its snug fit with my current mask (you'll be squeezing your face tight before the mask rips). With some deft manipulation in Meshmixer, I was able to add a couple of extra hooks to loosen it up. In my photo, the original design sits on top and my extension is below.