| 摘要 |
A watermattress comprising a bladder formed of water impervious sheet material and having a major top panel, a major bottom panel, and a side panel. The bladder can be filled with water. The side panel has an initial shape when the bladder has no water within it and a first particular shape when the bladder is filled with water. A sidewall extends laterally of the bladder for supporting the bladder. The sidewall has a top surface, a bottom surface, and a side surface facing the side panel of the bladder. The side surface of the sidewall has a second particular shape when the sidewall is in a generally uncompressed state. The first particular shape is generally complementary to the second particular shape. A mattress cover surrounds the bladder and the sidewall. |
