Specifications Product NameUSB Heating PadQuantity5pcsMaterialComposite FiberPower SupplyModeUSB ChargingInput Voltage5V2ATemperature45°℃ 65°GearRed High Grade Blue Mid Grade Green Low Grade Product SizeAbout 80 120mmWeight About56g Features 1 5PCS Heating Pads Design The heating pads comes with three speed adjustable temperature front and rear dual control switch design red for high gear the temperature can reach around 65 ℃ white for mid range around 55 ℃ blue for low gear around 45 ℃ 2 Convenient to Use You can directly put this USB heating pad into your jackets vests and other clothes for warming and heat it by using 5V 2A power source such as computer power adapter or power bank Not included 3 Wide Application Suitable for clothes vests waists abdomens pants and so on This heating pad can help you relieve stiffness knotted muscles tightness iammation spinal stenosis fibromyalgia arthritis osteoarthritis abdominal cramps pinched nerves as well as muscle pain caused by injuries and sprains 4 Foldable and Water Resistant The pad features heating evenly washable but do not immerse it in water for long time The cloth is glued together the long term immersion is afraid of affecting the adhesive degree of glue 5 Lightweight and Portable Convenient to take with for outdoor camping or other activities on winters Also applicable to the people who are afraid of coldness and they will do not fear of winter any more with it Package includes 5