It makes going up and down stairs smoother and less strenuous, and effectively reduces the burden on your arms and back. The body adopts a foldable design, which does not require complex operations. When idle, it can be shrunk to a compact size, reducing its storage space. Equipped with a freely extendable pull rod that supports multiple height adjustments, users can find a comfortable push and pull angle that fits their height. The noise is low when the tires roll, and the corridor will not affect the neighbors. The bottom is equipped with universal wheels that can rotate 360 °, making it easy to turn around and move when pushing on flat ground. Equipped with a foldable track bracket, the bracket can be unfolded when climbing stairs, and the tracks are alternately pressed against the steps, making it easy to climb up and down stairs without lifting heavy objects.