Kangoo jumps (KJs) are safe, low impact rebound sport shoes, that provide many great health benefits for everyone at any age. Designed by NASA for athletes to protect overused joints, KJs absorbs up to 80% of the impact in ankles, knees, hips, and back that normally are compressed when wearing regular shoes. They are now being used in orthopedic patients and in gyms worldwide as an intense aerobic exercise. They are so much fun you'll forget you're even working out! Never has an exercise program been so enjoyable, safe, and easy to learn.