The name says it all. It's like running on air, but with a powerful boost. This treadmill is different from any you've run on before; it was designed to optimally perform high-intensity training programs. When running on the Assault Runner, you burn up to 30% more calories than on motorized models. It's unmotorized and ultra-lightweight. The special feature of the Air Runner is that it is powered solely by your own energy, without any external assistance. You will be amazed at the tough workouts that are possible just from the strength of your legs. The Assault Runner is also the lightest treadmill and, with a width of just under 84 cm, it saves a lot of space. Ideal for interval training: The Assault Team understands the effectiveness of interval training, which is why the treadmill was developed with HIIT in mind. The runner can immediately and freely vary the speed without any additional adjustments. You run effortlessly. Due to its elliptical shape, there are almost no inclines.