The Healthy Wave Amethyst, Tourmaline, Obsidian, Jade Far Infrared Heat King sized Mat combines key Mat technologies and several types of crystal into one single mat. This mat features the most comfortable, SOFT design and is made of 65% crushed amethyst crystal, 11.5% tourmaline crystal, 11.5% jade crystal and 11.5% obsidian crystal. This mat with the smaller crushed stone pieces will conform to your body shape better when you lie on it and provides best comfort
