My wife purchased these as one of the groomsmen gifts for our wedding almost seven years ago. I can only speak for my clip, but it has held up well. It holds 5 credit cards in the main slot. You really need all five cards in order to keep enough pressure to keep the cards in place. I  have noticed a small amount of bowing on the cards, particularly the top two or three cards. I do not consider this an issue; however, as I keep my drivers license on top and it is in perfectly fine working order after seven years in this clip. I also keep seven cards in the money clip side of the clip. Surprisingly, these cards stay in place rather well despite only having a border on one side and resistance from the pressure of the clip. That's not to say the cards can't fall out, but it is rare (it has happened to me maybe twice in seven years as I attempted to take money out from the clip). I love this product because it keeps a low profile in my pocket whether I am wearing a suit, jeans, or shorts. It's also great when going to a pool or beach and get everything wet - it does not matter to the clip. Lastly, I have noticed that when you put an excessive amount of money or cards in the money clips side, the metal bends a bit and the pressure is reduced when you put less in the clip. I have always been able to gently press the metal back into shape to bring the pressure back up. Despite some small drawbacks, I love this clip and recommend it.