Vinyl and Plastic Issues

I've loved the transparent covers for the CP Petite and Traveler's notebooks, but each and every one of them have eventually broken the insert portions where I can put a card or something in its respective size (two items at most). Unfortunately now my credit card holder that I used for the same cover purpose has broken. I like being able to customize my notebook and it's only been a few months since I have had them without much toss around. Even for my pocket plus, I've changed my transparent covers for the vegan leather which I love, but I really wish there would be better durability for these holders in the future.