Shoe design is pushing the boundaries of what is possible in both the real and virtual worlds through state-of-the-art technologies, ground-breaking materials, and new and innovative ways of thinking about what a shoe can be. New modes of making and innovations in materials are inspiring shoe designers to challenge what shoes can look and feel like. This book explores today’s most futuristic footwear designs, from the use of new technologies such as 3-D printing and smart technology to the invention of sustainable materials, including “leather” made from mushrooms and soles made from reclaimed ocean plastics. It also examines footwear design in the virtual world where adherence to things like comfort and gravity are no longer part of the equation. The importance of sneakers in games such as Grand Theft Auto and Fortnite are explored as is the new enthusiasm for collectable non-fungible token (NFT) sneakers that are being acquired for tens of thousands of dollars for a single pair.