| 摘要 |
<p>A back support (10) for supporting the back of a seated person, comprising a concave shell (20) having sides (50) extending forwardly of the shell (20) and strap means (70) extending between the sides (50) to define a back support surface (75), the strap means (70) being of adjustable length between the sides (50), the arrangement being such that tension applied to the strap means (70) causes the shell (20) to deform whereby the back support surface (75) conforms to the specific shape of the person's back.</p> |
