The hipster crowd that loves their fixies usually like something unique, and French designer Tristan Kopp doesn’t disappoint with the prodUSER system. Essentially this bike has no tubes – well almost no tubes – but rather features a number of clamps, which can be used with various materials of the user’s choice.
He suggests that everyday branches be used and you’re good to roll. We question this concept because clearly someone could put PVC piping or an old broomstick but we don’t think it would actually be “safe.” Certainly a ride at your risk sort of thing!