A wallet is a flat case or pouch, often used to carry small personal items such as physical currency, debit cards, and credit cards; identification documents such as driving licence, identification card, club card; photographs, transit pass, business cards and other paper or laminated cards. Wallets are generally made of fabric or leather, and they are usually pocket-sized and foldable.

Leather is a strong, flexible and durable material obtained from the tanning, or chemical treatment, of animal skins and hides to prevent decay. The most common leathers come from cattle, sheep, goats, equine animals, buffalo, pigs and hogs, and aquatic animals such as seals and alligators.