| 摘要 |
<p>The device has a base body, which includes a sliding base (2), a seat surface (3), which lies opposite to the base body, and a leg contact surface (4) attached to the seat. Retaining and control grip (5), which projects from the leg contact surface is provided in the leg contact surface. The base body is formed of a mixture of propylene and ethylene or from polymers that are derived from propylene and ethylene or containing propylene and ethylene.</p> |
