Ekster’s line of slim wallets and cardholders has elegantly retained a classic wallet look, while ditching the traditional fold. For everyone else though, wanting a modern look with a modern design from Ekster, the Aluminum Cardholder is a solid step in the right direction. Slimmer than even Ekster’s other slim wallets, the Aluminum holds 4-6 cards in its 7.4 millimeter main compartment. Minimalism In MetalFor many, this might be too minimal a design, particularly if you’re coming from a traditional wallet. On its own Ekster’s Aluminum is a nice cardholder but put into the other options Parliament, Senate, and now you’ve got a broad spectrum to choose from.