Features PREMUIM QUALITY: USB jacket heater Adopting soft fabric with built in insulation fiber heating material, comfortable and wear-resistant, durable for use. You can directly put it into your jackets, vests and other clothes for warming and heat. SAFETY: The high-tech carbon fiber heating material has a long service life and can be bent at will. It will not break during use and will not arc, which can effectively prevent fires and other accidents. It is safe and reliable. CONVENIENT TO POWER: Just connect it to USB port of computer, power bank, or power adapter of 5V, 2A.This electric heating pad can provide full body relaxation, heating and soft structure to embrace different body areas like neck,back,abdomen,or legs snugly. FOLDABLE & WATERPROOF: Heater Use Foldable and water resistant to a certain degree, heating evenly, good heating efficiency, washable, but do not immerse it in water for long time. HIGH THERMAL EFFICIENCY: In a short period of time, the temperature of Heating Pad can reach about 40 , which is very comfortable and warm for the human body, Widely used for warming shoulder, neck, waist, back, abdomen and cushion or pet bed. Specifications:Material: Carbon fiber Color: Black Maximum Voltage: 5VConnector: USB Pad Size: Approx. 23 x 29cm / 9.05 x 11.41"Cable Length: 1.5M / 59" Temperature: 35℃-50℃(after 20min~40min) How To Use:1: Find a piece of quilted jacket, bath towel, etc., and put the heating pad in (fold it in half or flat, if you want to test the temperature, you can put the temperature probe on the heating pad). 2: The heater is connected to the 5V2A USB output interface. 3: The temperature in the padded jacket will continue to rise as the heating time increases, and the expected temperature will generally be reached in about 10 minutes. Attention: If it is exposed in the air or placed on the table to test the temperature, a little bit of heat will be dissipated. Application Range: 1. Customers who use it in their clothes, let them put them in their clothes to test the temperature. 2. For pets, such as cats and dogs, you can put the temperature probe to test the temperature in the middle of the heating pad, then the pet will not radiate heat when lying on it, and the temperature will rise. 3. For solid products, wrap the heating pad on the product first, and then wrap a layer of foam paper or thermal insulation cotton on the outside to prevent heat dissipation. Package Includes:1 x Heating Pad1 x USB Cable Package List