Hello, I decided to do something like this because I was tired of carrying an extra ID card. The case both protects the phone and has a slot to hold the ID card. Compatible with iPhone 13. I hope you like it too.
I printed the product with TPU material. If you want, you can print it with PLA, it's completely up to you, but I recommend printing it with TPU. For Cura settings, I recommend you to press it vertically because the ID card entrance is small and needs to be pressed with support. I think it is very difficult and not possible to remove its supports. That's why I recommend you to press it upright with support. I printed it with 40% fill, it seemed quite enough to me, you can edit it according to your wishes.