Skyrunner is mainly defined by a flat spring controlled when deformed so the result is a straight movement relative to the ground. With the function principle of the riser, depressive spring characteristics and reverse movement of the force point are achieved during deformation. This supports the natural force point movement in the heel direction under higher loads and allows the runner to transpose their optimal bounce energy. Therefore, you can really fly! Skyrunner is recommended...A. Incredible experience through exciting sports has never been seen before in the entertainment world. B. Cultivate the new adventure spirit for young people. C. Train the mind and body of the child worn out by hard studies or online games. D. Good for losing weight (by reducing fat deposits, waist, buttocks, calf diameter) and physical exercise. E. Increases HDL-C (High Density Lipoprotein Cholesterin) and reduces THR (Total Cholesterol & High Density Lipoprotein Cholesterol Rate) F. Building lower torso effect A. Stress killer athletic activity removes stress. - But please note: do not train too much, because this can also cause stress. Relax and do your open air laps with the Skyrunner and vary the intensity as you like. Soon your mind became clear again and you have free capacity for the essentials of your life. B. Time saving. To effectively fight against stress, you usually need a regular and time-demanding workout. These times are over. With the Skyrunner, the stress-reducing effect occurs after 5 minutes. You will be amazed and relaxed in no time! C. Increases Enporphins. With the Skyrunner, this happens after just 3 minutes. Your motivation will increase enormously. D. Good for losing weight (by reducing fat deposits, waist, buttocks, calf diameter) and physical exercise. E. Increases HDL-C (High Density Lipoprotein Cholesterin) and reduces THR (Total Cholesterol & High Density Lipoprotein Cholesterol Rate).