The Cooling Mattress Pad.

"This is the mattress pad that keeps your bed cool so that you can sleep comfortably. Chilled water continuously circulates through soft, flexible micro-tubing within the pad to help eliminate night sweats and restlessness that can deprive you of a sound slumber. More energy efficient than cooling an entire room and more targeted than a fan, the mattress pad has dual zones that enable bedmates to independently control the temperature on each side using the included wireless remote controls. The pad's temperature can be adjusted in one-degree increments down to 46º F (or warmed to 118º F). A timer automatically turns the pad on and off, ensuring that your bed is already cool the moment you slip under the covers. The pad's dual cooling units operate quietly and are compact enough to stow discreetly under your bed. Cooling units plug into AC; each remote requires 2 AAA batteries. Pad can be machine washed and dried. Cooling unit 7"" H x 10"" W x 8"" D. King. (30 lbs.)"

The The Cooling Mattress Pad. from the Home Care>Heating and Cooling category can be bought online from Hammacher Schlemmer.