Skyrunner Kangaroo Bouncing Spring Stilts the jumping stilts is with fiberglass springs,for users can walk, run, bounce as you are on the trampoline. skyrunner jumping stilts give you alternative exercise and enjoy it. Skyrunner is an all-body fitness machine.It helps you with aerobic exercise but also strengthen your muscles. It strengthens all body muscles, including not only the leg muscles but also the upper body muscles and abdominal muscles.Skyrunner jumping stilts offer you a new exercise,you can walk,run,jump,bounce,you will practice your body balance and muscles,Skyrunner is an all-body fitness machine.It helps you with aerobic exercise but also strengthen your muscles. It strengthens all body muscles, including not only the leg muscles but also the upper body muscles and abdominal muscles.Product's Name: Skyrunner1. Selection of Skyrunner Model Select a model according to the weight and age of the user.2. Is it hard to play? No, it is easy to use. If you have basic athletic sense, you can walk after 10 minutes of use. You may feel that it is easier than what it looks like. Balancing on Skyrunner is the same as in walking. 3. How about the exercise intensity or scope?Skyrunner is an all-body fitness machine.It helps you with aerobic exercise but also strengthen your muscles. It strengthens all body muscles, including not only the leg muscles but also the upper body muscles and abdominal muscles.4. Isn't it dangerous?It is not dangerous if you do not use it excessively.Like any other fitness machine, you should fully understand how to use Skyrunner before you start to use it. In addition, be sure to wear protective devices such as a helmet and knee pad. Skyrunner is a jump stilts; you need not be afraid of falling or becoming injured. Skyrunner is easy to use; its as if you are just walking or jogging. Once you get used to the basics, you will not fall.5. Can my joints or muscles be injured?Absolutely no.The fiber glass spring absorbs shock up to 2m jumps with its spring elasticity, protecting joints such as the knees from injury.6. Can anyone use it?Yes, anybody can use it.However, it is important to select the proper model appropriate to users body weight. And since Skyrunner is made with fiber glass spring that absorbs jumping shock well, even persons with weak joints can use it.7. Where should Skyrunner be used?Use it on a broad, flat and strong ground.Avoid using it in places that have plenty of automobile traffic and places that are wet or slippery. In addition, do not use on a bumpy, soft, inclined place.8. Components of the Skyrunner1) Spring: special reinforced glass fiber2) Body: aluminum alloy3) Step: rubber4) Connection: bolt or nut5) Others: plastic