Originally, Dave designed the medium bi-fold with pigskin down the middle of the wallet. This caused the wallet to be much stiffer and would break credit cards down their magnetic strips. We took the pigskin lining out and this fixed the problem. However we've had some "duds" sneak through the production line and we are sorry about that. We are all about quality, so if you ever have a problem with any products, please send your requests to email@example.com or give them a call at 210-858-5210 and we will take good care of you. Cheers and thanks for all the compliments.