Infrared Heat Therapy Healing Natural Yellow Jade Mat / Pad (25" x 18") JADE-y65 This healing mat includes 160 pieces of natural jade stones - the Asian tradition of heating jade stones for comfort and health. Every jade stone 1" in diameter. With a programmable Thermostat and timer, provides safe, long-lasting, deep penetrating far infrared therapeutic heat. The temperature adjustable from 25 to 50 degree in Celsius. Size: 25" (L) x 18" (W) x 1" (H). Heats in winter, cools in summer. Provides negative ion therapy. Block harmful electromagnetic radiation. Improve blood circulation and immune system.. Relieve pain and stress.