Wallet measures just over 10cm x 10cm (that’s 4 x 4 inches) when closed and 21cm x 10cm (8 ½ x 4 inches) when open. It has 3 card slots and 2 extra hidden slots for cards etc. My wallets also have a cash pocket which is held shut with a small piece of Velcro. The wallet has a long slot which runs the length of the wallet for notes/receipts etc. (see ‘example’ picture-cards & money not included!!!)