I have used the Lodis card cases to carry my credit cards for years. They're the perfect size for me and a great item to travel with. They're also really sturdy. I abuse mine quite a bit and they always look brand new until it's time to replace them.  The only problem is that over time, the seams begin to tear a bit.  I can't complain, though, because I get plenty of use before they require replacement. I currently have 13 cards in mine. If you want to carry more cards than that, this might not be the item for you.