Trek's top of the line aluminum road bike, it features the outstanding Shimano 105 group set and the 105 hydraulic brakes. I've upgraded the tires for more gravel and limestone trail riding comfort and traction by outfitting the bike with tubeless 700 x 38c Bontrager Girona RSL GR TLR Gravel tires. The original equipment 700 x 32c Bontrager Kwaremont Comp with tubes are included in the purchase, along with the attached bottle care. I've driven the bike just one mile on the Kwaremont Comp tires and one mile on the Griona RSL GR TLR tires. This fine, fast and comfortable to ride bicycle is in perfect condition. Save money by purchasing here and get a better quality bike at a lower cost and fewer miles on the frame, brakes, shifters than purchasing the same model through Trek Red Barn. Also, you save by not paying any taxes!