Bike Rassine City Hopper Single Speed Aluminum Folding Bike, 36-Inch Compact foldable bike with mini-wheels stores to 45-inches by 11-inches by 19-inches Durable and lightweight all aluminum construction Mini-sized wheels make this bike agile in traffic or crowds Seat adjusts 30-36-inches height; handlebar adjusts 31-38-inches for riding comfort Single speed free wheel hub