| 摘要 |
<p>The mattress (1) has a water absorbing water bed covering (2) provided with a lower side surface (6) and a side surface. A functional body (4) e.g. mat-like stabilization body, is removable from the water bed covering. An opening (8) is attached with a closure unit (3) for repeated non-destructive opening and closing of the opening. The closure unit water-tightly seals the bed covering for environment in a closing position of the bed covering. The opening is laminarly formed, and the closure unit completely releases the opening in an opening position.</p> |
