This economical road bike is built on a lightweight 6061 Aluminum frame. It features Shimano A050 thumb shifters and dual brake levers for convenience. It has mount points on the frame for a rear rack, this bike is an excellent commuter.All NEW 2013 model with 21 Speeds and Shimano thumb shifters. Selling as of 11/13/2013We"ve listened to feedback from riders and have introduced some significant upgrades to the 2013 model. We"ve replaced the downtube shifters with an updated Shimano thumb shifter - this allows you to shift with your hands on the handle bars. We upgraded the brakes for more stopping power. We"ve added a third smaller chainring on the front for easier hill climbing, and we"ve significantly improved the packaging to better withstand shipping. The best part - the price is the same!Full Specs:Frame: 6061 Aluminum, Water bottle and Rear Rack mount pointsFork: Hi-Ten SteelShifters: Shimano A050 Thumb Rear indexed 7-speed, Front Friction 3-speedBrakes: Alloy CaliperStem: Alloy 7° RiseWheels: 700C Double Walled AlloySaddle: Urban CommuterBrakes: Dual brake levers - Caliper steelHandlebar: AlloySeatpost: AlloyPedals: Free platform pedals includedAssembly & Tuning is required.