The Drive Medical Trekker Tyke Gait Trainer can be used in the anterior and posterior position. The directional lever allows either forward and reserve mobility or only forward mobility, depending on the needs of the user. The variable resistance controls the speed of the rotation of the wheel, swivel casters can be locked to non-swivel, and the brakes lock as well to prevent the unit from moving. The height can be adjusted in 1" increments and accessories can be mounted, tool-free, onto the frame and can be removed or added according to the individual user's needs and abilities. No Assembly Required.