After using my previous wallet for around a year or so. I got to the conclusion that I can make it a little bit better by changing the initial concept with two rubber seals to just one bicycle inner tube. This also makes the wallet more eco-friendly by using a product that would otherwise go to trash. the print is simple and quite quick. You will also need a used inner tube from a bicycle ( I went to a nearby bicycle shop and asked if they had some and they gave one to me :) ).
The author remixed this model.