Description: -You can store up to a maximum of 10 credit cards, due to the high quality elastic fabric used. -The strap is very elastic and durable. You can use sinji band to put one finger on it for a phone call or put four fingers on it to wear as you like. No need to worry about sudden tears off as it sticks firmly to side pocket. -3M tape allows the sinji removable bag to stick on firmly and easy to remove without residue. -Sticked on to any Smartphone's attachment or its protective case, Sinji Heat makes it turn into a wallet, money clip, wallet for men, wallet for women, card holder, credit card holder and credit card case.