To start with, it's a minimalistic wallet made with high-strength aluminum or titanium, depending on the model. However, it also offers a ton of other functions, most of which are things you would never expect to see in a wallet.
The creators of the MULTI list a total of 12 different functions, one of which is holding credit and debit cards as a wallet. It can also be used as a flat or Phillips head screwdriver, a nested wrench (in SAE or metric), a two-inch ruler, a bottle opener, a twist top opener, a wing nut wrench, a smartphone tablet stand, a can top popper, a box opener, and a keychain.
Using it as a smartphone or tablet stand will require a few steps. The middle piece keeps the tablet propped up, and the credit card on the inside sticks out to keep the tablet or smartphone in place while the device is in use.