This is a credit card sized wallet insert with graduated levels for different keyring and preferences. It provides the means to attach somewhat bulky items to a wallet. It should be printed from flexible but sturdy material, such as nylon. I printed it from Ninjatek Armadillo. Printing the Armadillo hot (235℃) and slow (50% PLA speed) worked for me. I used about .15 mm layer height.
The author hasn't provided the model origin yet.