Three adjustable heights, suitable for people of different height and age. Durable aluminum alloy, anti-skid and waterproof pads on the surface of the pedal. Foot brake improvement, immediately stop when you step the brake, more safe and flashing three-wheel, great stability. High-quality sponge handlebar, good touch.The fixed device, easy to unfold and firmly fix, safer. A small bell on the right, convenient for children remind the passerby.