Card Case holds ten or more business cards and about five or more credit cards. But go ahead and stuff about 25 of them in there on each side, in which case it stretches and holds more * Most Excellent Bonus: The little Moleskine Volant notebook (that itty-bitty one) fits perfectly inside and the magnets hold through the notebook. We didn"t plan this but imagine our delight! * Magnetic closure, guaranteed safe for ATM, credit or other magnetized cards. We use Card Cases, of course, and Tony at the bank double, triple checked! * Measures 4" x 2.625" closed, 6" laid open * Polyester thread