Marlin 5 8 speed mountain bike. LARGE aluminum frame and 29in wheels. Bike is in good shape and has been well taken care of. Bought it brand new from Bike Tek and has only ever been serviced by Bike Tek. I have all the original hardware that came with the bike. I've upgraded the pedals to a hard nylon non slip. Included with the bike are the added water bottle carriers w/ 2 bottles, LED head lamp, universal quick attach mount for cellphone, LED brake light, upgraded seat little more padding than stock and matched the color. Also have spare tubes and tire change tools that come with it. Have the receipt for proof of purchase. I have over 700 in this bike so 450 is a steal.