Retrospec Mars Hybrid City Commuter Bike Vintage-inspired single-speed diamond frame hybrid bicycle constructed for overuse and long-term comfort Equipped with front and rear caliper brakes for easy and precise stopping Ride confidently and with purpose on Kenda commuter tires with dispersion grooves Comes standard with cushy grips, comfy saddle, rear rack, and front light Arrives at your door 85% built with assembly tools, Instructions, and an owner's manual to make finishing putting together your bike easy