2 cardholders: Internal dimensions: 8.9L x 5.8W (cm). Hold 2 standard credit cards measuring 8.4cm x 5.3cm. Very suitable for ID cards, driver's licenses, badges, passes, etc. Not suitable for thicker cards!Easy to use: The practical thumb slot allows you to easily slide the card in/out with just one finger. The convenient top loading design securely holds the card in place to prevent it from falling.Heavy duty: The sturdy and durable polycarbonate shell is heat-resistant, wear-resistant, or damaged. The stainless steel badge scroll can withstand 100000 tensile forces. Its stretchable nylon rope can smoothly extend up to 61 centimeters.Carefully crafted to achieve maximum transparency, presenting you with ultra clear visual effects. Easily read or scan your card without removing the lanyard or phone case.Easy to carry: equipped with detachable hooks and durable belt clips. Secure items in pockets, belt loops, backpacks, or zippers for easy carrying.