This ear saver was designed specifically for TPU. It's base is 2mm thick and it's 200mm wide by 135mm depth.
This sits much higher on your head than most other ear savers, and the mask's elastic bands should go around your ears. This makes for a better seal and very little pressure on your ears.
Print with TPU at 0.3mm layer height. It is not designed for any non-flexible filaments.
The author hasn't provided the model origin yet.