Made by Olympic Obi Trainers, this training equipment allows you to naturally master the use of your knees and feet by simply putting it on and balance. Simply slip on the balance shoes and repeat knee bending exercises such as squats and jumps, and you can correct your knee twists and develop a habit of bending straight knees. Use it as a pre-workout warm-up to help you practice in the ideal condition of your knee joints. Maximize the potential of athletes legs to prevent injuries and improve performance. Product Description