Massage Stone HeaterThe Digital Display Massage Stone Heater & Warmer is a fantastic blend of design and functionality. This warmer holds up to 90 medium (2" x 1") sized spa stones and has an easy to read digital display. All that is required to run the massage stone heater is to set the stones within, cover the stone heater to keep the heat contained, and place a bowl filled with cold water underneath the inner pan. As a small machine, this spa stone warmer is ideal for