I have been having problems with my medium bi-fold breaking cards. My first one was breaking the top card along the stripe. I contacted them and the customer service was top notch. They sent me a new one within the week. Well I am on the second one and after about 2-3 months it is bending all cards and has broken the bottom in the nice little wavy patern on bottom slot. I should mention too that I stand at work 10 hrs a day with a 30min round trip drive. I thought about putting a piece of cardboard behind card to maybe support it or something. Any tricks? I am sure some have carried these with sucess just want to make some aware. Contacted them about refund, well no answer. Go figure. I must say that the wallet is beautiful, and built to last 100 years. To bad the cards wont make 2 months. (100 years should cost me $2000 to own, $5 replacement* 2 a month) My rear cant stand any more break-in period. I will retun it to them on my dime when my old faithful Bosca is here. My last Bosca lasted 15 years thats good enough in my book.