This Austrian student project started during the study of Maximilian Mueller at the Vienna University of Technology. He noticed that the sheer size and weight of his wallet was getting in the way of his everyday life. He and his friends wanted something new, something simple and practical. This is how Wallum, the slim wallet, was born. He immediately had ideas forming in his head, inspired by something so simple. After designing a product on paper, he applied his skills for working with metals, to create a first prototype which was released for a Kickstarter and Indiegogo crowdfunding campaign.