Use electric heating pads to relieve menstrual cramps, arthritis, <br> injuries, and other ailments. Heat increases blood flow where applied, helping to dilate blood vessels improving circulation.<br> The increased blood flow to a treated area can help soothe muscular cramping, spasms, and soreness. <br> This Snailax heating pad is applying deep-penetrating thermal care and soothing massage onto <br> your muscle, and it helps to improve blood circulation and to accelerate healing.<br><br> Features:<br> Extra Large Soft Heating Pad for neck shoulder and full back (36 x 20 inches)<br> Quickly heat, you can feel warm within 1 minutes<br> Two adjustable heating level available<br> Overheating protection system<br> Heating wrap pad is set with a auto shut off 30-minute timer<br> Vibration massager, built in 4 massage nodes to deliver relaxing massage.<br> 5 Pre-programmed vibrating massage modes for options<br> With magnetic clasp design to keep hands free<br> Two elastic straps help to fix the heat pad close to your body<br> Luxury velvet cozy cover<br> UL approval 12V home adapter is included