High Quality: This folding bike is made of high-quality carbon steel, it is durable and lasts long. The bike works like a new one even after a long time. The seat of this bike is made of synthetic leather, it is comfortable. It can be evenly stressed when riding, so it won't hurt your butt during long rides..Light Weight: This bike weighs only 13kg, you can move it and open it easily. The light weight also prevents you from getting hurt by the bike..7-Speed Shifter: This bike has a 7-speed shifter, you can ride it at the desired speed. The 7-speed shifting allows you to enjoy the fun of riding in different weather and roads..Safe and Reliable: This bike is equipped with a highly sensitive double brake system, always guards your riding safety..Ergonomic Design: This bike is ergonomically designed so you can ride it with less labor. It is also safer since you won’t feel fatigued easily. The seat height and handlebar height of this bike can be adjusted.