Owners of MF-11 / FMJ05 Gas Masks, has this ever happened to you?!

You're in the middle of strapping on your beautiful CCP technology when suddenly - snap!
The plastic buttons snap in half because... it's cheap plastic?

Well, I've got the solution for you!
The included files here will allow you to print a TPU replacement. Tried and tested with my cheap Overture 95A TPU.