| 摘要 |
A cushion provides a protective comfortable barrier between a portion of a user's body and a supporting surface, and aids in the prevention of discomfort or numbness that accompanies long periods of contact with a supporting surface. In first and second aspects, an inflatable cushion comprises at least a first inflatable element and an outer element. When the first inflatable element is substantially fully inflated, the outer element is in contact with the first inflatable element, and the outer element at least partially covers the first inflatable element. In a third aspect, a cushion comprises a bladder having internal and external surfaces, the internal surface defines an internal space, the external surface comprises a first region, a second region and a peripheral region, and the peripheral region extends peripherally around an entire periphery of the bladder and extends from the first region to the second region around the entire periphery.
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