This is a replacement Mickey head shaped pin back for Disney Pin Trading. This is as close to the original size and dimensions as I could get, and I think it works pretty well! Should be printed in TPU flexible filament. The hole is intentionally sized smaller than the pin so that it holds tightly. BE CAREFUL inserting the pin into the back, especially the first time. It's very easy to push slightly the wrong way and have it poke right out through the print.
Should be printed in TPU flexible filament for best results