Treadmill surface for sports- and fitness area, has projecting curvatures provided in preset height and arranged in wave form and exhibiting different and same hardness degree, and air chambers provided in surface
摘要
<p>The surface has projecting curvatures provided in height of 5 cm and arranged in a wave form. The projecting curvatures exhibit different and same hardness degree. Air chambers are provided in the surface. A treadmill is provided with knobs or air pores provided in different forms, heights and arranged at a distance.</p>
