Bought this wallet several years ago (probably 5) after reading about it in the NY Times.  As I remember, as a result of the article, the company was inundated with orders which they could not fulfill immediately.  I believe that because of delay in processing, they threw in a check holder.  I still use both products and, as far as I can tell, they are in good shape.  I carry a total of about 20 cards of various kinds.  That amount tends to keep the cards secure.  In the two billfold compartments, I carry cash, usually six to ten bills at a time in one section, and in the other section, I carry some other cards as well as those little swipe cards.  The little ones are a pain because they stay deep and it is hard to get them out.  The wallet is incredibly thin and strong.  I do make sure that when I carry it in a jacket that the jacket pocket is zipped.  Highly recommended.