It is designed to make driving as comfortable as possible thanks to its raised handlebar. The rear wheel is flip-flop, just by turning the wheel you can go from a 1-speed bike to a fixed-gear bike.The wheels are 30mm deep, CNC machined braking surface and 700c size, just like road bikes. It comes with 700x28c Kenda tyres and comes with the front and rear brakes included. In short, a very nice fixie bike, at a very good price, ideal for moving around the city. Retrospec Harper - Single Speed Bicycle - Matte Black Bicicletas, Singlespeed.