BIONIC DESIGN: Exoskeleton legs compensates for insufficient muscle strength by synchronizing with the rhythm of the human body's pace, and completes efficient and harmonious auxiliary training. PENDULUM PRINCIPLE: Exoskeleton leg is more efficient without a power source. Consider the hip and knee as two pendulum oscillators. Walking not only on leg muscles but also on the natural tendency of gravity. ENERGY STORAGE DEVICE: This exoskeleton suit is adjustable intensity, the auxiliary device has three levels to choose from, clockwise rotation increases the intensity, naturally obtains energy without recharging. LIGHTWEIGHT AND COMFORTABLE: Because passive walking is similar to human walking, and because this exoskeleton suit is lightweight, assistive device wearers experience greater comfort. EASY TO WEAR: This exoskeleton suit is designed specifically for people with mobility impairments. The entire putting-on process only requires securing two straps and can be completed in a few tens of seconds.