The Healthy Wave Mat PEMF, Amethyst, Jade, Tourmaline & Photon Energy Large Mat harnesses all of the key technologies and different types of crystals in one single mat. This mat features optimal PEMF technology with selections of frequency range 1 to 30 Hz and up to 3000 mG dynamic field strength, 24 low level 660nm therapy red lights, 72 jade stones, 48 tourmaline stones and 24 lbs of amethyst crystal. This mat is longer and wider than a standard sized mat making it perfect for the taller or larger individual. Due to the PEMF being included in the mat it cannot be bent in any direction and can only be used on flat surfaces. It can be folded in 3 sections for easy storage or transported in its carrying case.