The number of cards a RAINS wallet can hold depends on the specific model as well as the size of the wallet. Most RAINS wallets can hold between 3 to 8 cards in a combination of inner and outer card slots. Some models may have additional pockets and departments for other small items such as cash, while bigger models have space for a smartphone. You can always see the specific specifications of each model underneath the description, so you can determine whether the model will be able to meet your needs.