Note: Manual measurement has an error of 1?3cm._x000D_Please note that the product can only be used plugged in. specification: Item Type: Heating Belt_x000D_Material: Neoprene, carbon fiber_x000D_Size: Approx. 117 x 18cm / 46.1 x 7.1in_x000D_Uses: Heat the waist, relieve lumbar pain; back pain, body cold, dysmenorrhea, lower abdomen bloating, stomach cold_x000D_Recommended for the Crowd: Lumbar discomfort; long term sitting; sprains and strains_x000D_Product Advantages: Built in heating plate in the lumbar spine to relieve lumbar discomfort caused by cold weather Features: 1Convenient Operation: Warm pad is easy to operate, even for the elderly, and it can effectively care for the waist. 2Portable: External design is equipped with a power supply bag, which can be used anytime and anywhere, and can be used wherever you go. 3Use with Chinese medicine bag: There is a pocket on the inside, which can be used with Chinese medicine bag such as moxa, safflower, ginger, etc. according to your own needs. 4Widely used: With a wide range of application, suitable for women, the elderly and office workers, long distance drivers and so on. 5Multifunctional: Heated belt can relieve back pain, shoulder pain, stomach pain, cramps, muscle aches, arthritis, and other discomforts that can be treated with heat. PackageList: 1 x HeatingBelt 1 x USB Cable