Wallum is a credit card holder and replaces the traditionally big wallet with a stylish design. It is as small as a credit card, allowing you to fit credit cards and cash in a compact space. Different models of this new simple wallet are available. For example vertical and horizontal models, different colors and also RFID blocking wallets with money clips to store your cash. The origin of the name is quite simple: Wal stands for wallet and lum for aluminium which is the raw material. .