Klaus Kremmerz is an illustrator from Hamburg, Germany, known for his simple and beautiful images using felt-tip pens. Klaus’ bold and unique style has him in demand from clients including the New Yorker, the New York Times, Apple, Vanity Fair, Monocle and Esquire, to name a few. Klaus shared a selection of work-in-progress sketches with WePresent as part of our feature exploring his process, his inspiration and why using felt-tips makes him feel like he’s “driving without a safety belt.”