It fits perfectly on either full or queen size mattress. Each side can be controlled separately so two people can enjoy the biomat by controlling their half of the mat separately. There is a clear silicon urethane panel over the top surface of Biomat showing the amethyst gems to shine through and also for an extra comfort. You will get a molecular level massage and increased blood circulation. The Biomat replicates the effects of a sauna except it allows a more customized temperature regulation without the hazards of heating the head or the negative EMF exposure in traditional saunas or heating devices. Richway mat has been designed so that the Amethyst crystals can produce the most beneficial frequency of vibrational energy that the human body can absorb, thereby promoting increased conduction and absorbtion of Far Infrared Rays and Negative Ions. (Amethyst Pillow sold separately.)

Amethyst Queen Size	1400 x 2002mm / 55.11"x77.81"
Amethyst King Size	1800 x 2002mm /72.65"x77.81"
Net Weight	23kg / 52lb Without Controller
Electric Consumption	330W
Voltage	AC 120
Performance Temperature	35C-70 / 95F-158F
Amethyst Size	5mm - 12mm
Amethyst Color	Natural Violet Clear
Cut & Shape	Tumbled
Polariscope Test	Dr
Refractive Index	1.544-1.553
Fluorescence LW	No Refraction, Natural factor