Check out these custom designed fixed gear bikes that were part of a charity event put on by the environmentalist non-profit organization ACT Responsible. The group asked 12 designers to each customize a fixed gear that would later be auctioned off for charity. Some of the designers include François and Marithé Girbaud, Kenzo, and Agatha Ruiz de la Prada. The organization ACT Responsible is a non-profit that promotes responsible communication on sustainability, equitable development and social responsibility. For more information on this auction check out ACT Responsible. Check out some of the custom fixies below, or click here to see em all. Found this over on Treehugger.











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