Skin-friendly premium material and quick heating: Portable heating pad with super soft Lycra material, no harmful to human skin, we use the upgraded graphene technology, fast heating device, 3 seconds to heat, you will feel the heat within 3 seconds. Fast heat and more safe to use. 3 temperature and 3 vibrations: The portable heating pad for cramps with 3 different intelligent temperature controls and 3 different massage vibration modes, easy to adjust and control, the temperature represented by each colour is 113 F (blue), 131 F (white), 149 F (red). Long press the button The product to make the product to turn on, and briefly press the gear button to switch between different gear modes. Wild applications: Adjustable Velcro closure and elastic bands for different waists. It is suitable for multiple body parts hot compress, especially good for waist, stomach and more.