The frame of this city e-bike is made of Steel. The similar U frame is very fit for people to ride on the bike, especially fit for elders and women with dresses. When you go out for shopping, you can put goods on the front basket. It is very convenient. When you ride it on the road, you will attract lots of eyes. You will be a shining star! The bike features both pedal assist and throttle mode. Explore a new e-bike with ECOTRIC®!