Heels not only have to be the right height but in the right position: not too far back, but under the centre of the heel so they support your weight properly, following the natural line of your body.

Check this part for accuracy. It should have the dimensions as shown below. Unlike the upper support bow, the height of the lower bow must be maintain along with proper symmetry and width.

The main parameters of the hydraulic support, such as working resistance, setting load and support height, are analyzed and its main structures are design.