1. The double card case credit card holder design allows you to store more cards, one card box can store about 8 credit cards and there are two compartments open to store a small amount of cash and business cards. 2. Just gently push the bottom button of the credit card holder, the card will pop up in layers, you can easily find any card you want from your credit card wallet. 3. Our pop-up credit card holder uses a premium metal aluminum case, high-quality carbon fiber and PU leather. Excellent quality, durable, simple and fashionable style.