| 摘要 |
<p>The invention consists of a chair back support, which consists of at least two flexible elongated supports (2,2a) on both sides of the seat (1), which supports (2, 2a) are connected with support belts (3, 3a and 4, 4a), all supporting a person's back and making gymnastic movements possible both for the back and stomach while sitting on the chair.</p> |
