Free home Best price The infrared Deep Heat Far Infrared Jade Heating Mat is ideal for easing muscle stiffness in from your neck to lower back. Just plug it in and lie down. In just 15-20 minutes, heat will start penetrate your muscles. And you'll feel as carefree and relaxed. With these Deep Heat Far Infrared Jade Pads, when the jade is heated, it helps transfer the far-infrared waves deep into your body (up to 10 cm) to warm, soothe, cleanse and relieve your pain. That is 20 times deeper than conventional pads for deep relief.