This High End B-Shape Pillow 20??L x 12W x 4H contains around 2.7 pounds of 100% Natural Purple AMETHYST gemstones of Brazilian origin known for ability to emit FIR crystal rays and generate negative ions. The total weight of the pillow is around 5.5 pounds. There is a zipper on the back side of the pillow case to remove insert. The cover is made of luxury eco-leather soft but yet durable matching color of the Purple MediCrystal Mats collection.MediCrystal FIR Amethyst Pillows come from FDA registered manufacturer. It consists of 2 parts, the core insert made of special heat resistant REGULAR memory foam for GENTLE cervical support and the valuable cover with precious natural tumbled crystals of natural Amethyst infused along the whole length of the pillow case. You can take off the case with gems from the pillow insert and put on your own pillow. For better FIRM cervical support you can chose our hard pillow.The soft core pillow is preferable for long use, sleeping or relaxing, It holds head and neck in elevated position during FIR heat therapy sessions on hot stone mats and heating pads. Amethyst Pillow recaptures Far-infrared heat from the FIR Mat and radiates it at a lower intensity particularly beneficial for high heat detoxification procedures on your MediCrystal Amethyst Mat at high heat levels.Also great to use the Amethyst Pillow without the heating mat for more relaxing and restful all-night sleep to have more positive emotional state and protect both body and mind from EMF, underground water veins, bed mites, bacteria and molds. These pillows with healing gems are effective for neck, back and joints issues. Gentle pillow may work better for sleeping on your side, or belly.MediCrystal Gemstone FIR Pillows are non-powered and do not utilize electricity. The crystals forming the whole surface of the pillows naturally release healthy Far-infrared rays and Negative Ions in safe and delicate way using your one body heat. The gems can absorb the excessive heat from the too hot zones of your head and return it to those areas which need more warmth and better circulation.