The next testament to the design skills of David and the dyslexia of Loris Velos (we called this single speed bike CMDR for years :).
Timeless Chromoly 4130 steel frame with shortened geometry for explosive acceleration in city traffic. The bike becomes a fixie when you simply flip the rear wheel - thanks to the flip-flop hub with a drivetrain on both sides.
Carbon fork for extra weight reduction, according to PoloAndBike the fixie comes under 9.5kg !!!! Can we please just take a moment to emphasize again, that a bike under CHF700 and good components can be so light?