THERMAL WATER BED: SINGLE - DOUBLE EM.3870 - EM.3872 This bed is composed of a water mattress that molds and adapts to your body and, thanks to your heating system is kept at a comfortable temperature. Vinyl cover contains a thermostat and heater. EM.3870: 200 x 100 x 23 cm. EM.3872: 200 x 140 x 46 cms. On ground.