i gave it Excellent for the thought of having made such a thing.
I didn't expected to see it was made from some sort of hard paper, I don't know how long it would last in your wallet if you take it in and out few times a week ( when you need it.)
Maybe a cheap plastic version could last longer, then the excellent idea and design would make a perfection and lasting. case.
Handy to have while you are on go , least it does ,it's keeping the pin and the Sim cards together and you know where they are.when you need them.