It is a good alternative to crutches and is more comfortable than a cane. It allows people who have undergone foot surgery or leg injuries to maintain a certain degree of mobility and carry out basic life during non-weight-bearing periods, greatly enhancing their independence. The design of 10" front wheels and 8" rear wheels makes it more maneuverable and stable than other walkers, suitable for use on various surfaces indoors and outdoors. The steering column can be easily folded for easy storage in the back seat or trunk of a car. The height of the knee pad and handlebars can be adjusted to accommodate people of different heights, handlebars height: 32.9"-37.9", knee pad height: 17.2"- 21.1" With a sensitive adjustable handbrake and dual rear wheel brake system, pressing the brake handle and pressing the button can lock the rear wheel, providing better safety for users when sitting. Equipped with comfortable handles and soft curved knee pads suitable for both legs, it also improves the comfort of users when using for a long time. ZENART knee scooter also comes with a convenient detachable basket, where you can carry personal items such as books and water bottles when needed. Number Of Wheels?4