I have had several bi-fold wallets, but I just have too many cards to make it comfortable.  I have 28 cards in my wallet right now.  I carried my old wallets it in my back pocket of my jeans, and they gave me back trouble eventually.  I needed a wallet to carry a lot of cards, but wouldn't be thick. This wallet distributes the thickness of the cards over a larger area.  This wallet is no wider than my previous bi-fold wallets, but is taller.  It still stays concealed inside my back jeans pocket (it doesn't stick out), but with the added height, it cut the thickness of my wallet by more than 1/3... it makes it much more comfortable to sit on, and no more back problems from my wallet.  This was the best buy that I have made in years, and will probably buy another just to have on hand at this price... or for a gift for someone else.  I highly recommend this wallet to a man who carries a lot of cards in his wallet and would like it to be thinner and more comfortable.