Quick and agile riding with the 19-inch aluminum fitness frame and rigid fork, with 700c wheels fit riders 5'4" to 6'2" height Swift and seamless gear change with the Shimano 21-speed EZ-Fire trigger shifters and rear derailleur Road bike equipped with alloy disc brakes, ensuring superior braking performance Hybrid bike with flat style handlebar and sport riding seat, and with alloy, high-profile double-wall rims provide lightweight strength Arrives partially assembled, will require tools, Philips head screwdriver, Allen wrench 4-8mm, adjustable wrench, pair of pliers with cable cutting ability