After printing a few pair, I realized a few minor changes were needed. The Crocs seemed narrow, so I made them wider as they allow more room. Maybe just because Americans have fat feet. Then I replaced the button fasteners with my own. They can be printed with the TPU or on a separate provided plate in PLA. Lastly, I added both left and right shoes and straps on the same plate for overnight printing. I printed them as shown on the Bambu A1. The second plate is only if you want the button fasteners in PLA, but they work fine in TPU. Just add a drop of super glue before pushing together. The pair you see are adult size 2, but scale them proportionally as needed.

Again, this is my spin on someone else's great work. I only made the buttons myself. Oh one thing, I changed the infill down to 10% to make them soft as possible. Happy printing!