In Velo: Bicycle Culture and Design, editors Klanten and Ehmann explore the bicycle in all of its myriad forms, shapes, appearances and variations. From professional cyclists to common bike messengers, to the hipster up the street, this book collects photographic evidence and testimony for each, showing us the many faces and art forms that go into this simple two-wheeled design. Published by Gestalten, Velo: Bicycle Culture and Design is available direct from the publisher here.