Wallets are usually designed to hold banknotes and credit cards and fit into a pocket (or handbag). Small cases for securing banknotes which do not have space for credit cards or identification cards may be classified as money clips.Breast wallet (also called a "secretary wallet" or "passage wallet"[8]): a wallet in which the banknotes are not folded. They are intended for men's breast pocket in a jacket, or for a handbag. They are too large for storage in a pant (trouser) pocket.Bi-fold wallet: a type of wallet in which the banknotes are folded over once. This has become the "standard" wallet[citation needed]. Credit cards and identification cards may be stored horizontally or vertically.Tri-fold wallet: a wallet with three folds, in which credit cards are generally stored vertically.
