The high quality of the aluminum alloy frame and the excellent paint make this bike very attractive. The brake system consists of double Caliper brakes. And SHIMANO 2*7-speed Shifters ensures total control in every situation. The bike can be used to ride comfortably in the city.The 700C wheels offer the high-speed experience of a road bike. 85% pre-assembled,easy to assemble,free installation tools and pedals include. Size 50 cm for people between 5'4" & 5'8"