60x171cm. Twenty-four 200g pouches of shungite powder. The pouches are made of hospital-grade plastic and are sometimes doubled. The gray cover is made from 100% cotton. For therapeutic use, place on a massage table or tatami with blankets or futon on top for cushioning. Highly recommended for full body support for detox at night, the most important time for rejuvenating your body and protecting from EMFs, especially the new "smart" or "electric" meters now being placed on all Japanese homes and apartments. Covers from head to feet, so all you need it this mat to reassure you are getting the protection you need. Placed under the futon or mattress, the energy is set perfectly in your vital energetic aura, making it an ideal tool for top-level wellness. For children and adults. Note: It may take up to 1-2 weeks to get your body used to the strong energies of this mat. You may want to start by using it every other day or once every three days to ensure gradual detox. As with the use of any products or MRS Gunma services, if you have any questions or concerns, please call MRS Gunma staff.