Portable Footrest Massage Mat Accessory for Econo High Only! IONIZED! Does Not Include the FOOTREST! 100% Silicone Ionized Massage Mat accessory for Econo High foot rest The massage mat generates over 2,000 negative ion per second per cubic centimeter Negative ions help blood circulation, increases energy and power especially designed to provide your feet a gentle soothing massage action by using the fundamental principles of acupressure. Non toxic, allergy free, latex free, safe and long lasting life!