Designed by sleep experts the JT Bolster Inframat Pro® is made for optimal comfort and tension relief. The outside is lined with jade and tourmaline gemstones that press into your neck to release tension. Not only can it ease neck discomfort, but it will also help reduce pain in your shoulders and upper back. Your neck, shoulder, and body will feel refreshed after each use. The heat activates the gemstones to release penetrating far-infrared rays and negative ions. With all the added benefits of jade and tourmaline, you will have revitalizing sleep experience. Relax your muscles, reduce pain and tension, and improve circulation in targeted areas with the JT Bolster. *Due to a medical-grade silicone glue it does smell when heated