| 摘要 |
A cushion includes a resilient seat body having an upper surface formed with a central depression and an inner periphery which defines the central depression. A retaining member is disposed on the upper surface of the seat body in the depression and is retained therein by the inner periphery of the seat body. The retaining member is made of a flexible material and is formed with an array of positioning holes. A plurality of cylindrical cooling stubs are made of stone. Each of the cooling stubs has a lower portion received fittingly in a respective one of the positioning holes. A conduit unit is embedded in the seat body for permitting passage of a cooling medium therein for cooling the cylindrical cooling stubs.
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