55.5cm aluminum frame, fits men 5'7" - 5'10". It is a 27 speed built in 2005, and is suitably geared for both hill climbing and fast cruising. It is in very good condition with chain, crankset and cassette renewed about 500kms ago. It is ready to ride with Shimano SPD-SL pedals, full fenders with mud/spray guards, rear pannier rack, built-in lock, air pump, water bottle holder, bell, and kick-stand. All-up weight is 26 lbs / 12 kgs. I used this bike as a trusty commuter for many seasons, and it was always reliable, comfortable, and easy to ride. I am selling it as I have a road bike and just acquired a mountain bike.