| 摘要 |
A toroidal cushion sized to fit and support a posterior of a human user. The toroidal cushion slopes significantly from the back toward the front and comprises an upper cushion surface comprising a depressed center within a surrounding upper cushion surface. The depressed center and the surrounding upper cushion surface are configured such that the user's weight is essentially supported by the surrounding upper cushion surface whereas the depressed center is substantially non-body-weight-bearing and provides an upward force that contacts and supports a rectal area of a user when the toroidal cushion is sat upon.
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