Features： 1、Using soft fabric, built-in thermal insulation fiber heating material, comfortable and wear-resistant, durable. 2、Imported composite fiber heating wire is used, the heating wire is densely routed, the heating temperature is uniform and high, and it is not easy to oxidize and burn out the circuit. 3、You can put it directly in your jacket, vest and other clothes for heating and heating, using a 5V 2A power supply, such as a computer, power adapter or power box (this product does not include a power supply). 4、It has a certain degree of folding and water resistance, and can be washed, but do not immerse in water for a long time. (The cloth is stuck together, so long-term soaking may affect the adhesion of the glue) 5、The switch adopts full waterproof coating for better waterproof effect. The electric wire has the characteristics of folding resistance, waterproofing, tensile resistance and long service life. Repeated cleaning will not affect the use. 6、It is light and convenient, and it is convenient to carry during outdoor camping or other activities in winter. Specification： Condition: Item Type: Heating Pad Power Supply: 5V2A Power Supply Mode: USB charging Material: Composite Fiber Adjustable Temperature: 45℃-65℃ Gear Setting: Red (high-gear), blue (mid-gear), green (low-gear) Single Heating Pad Size: Approx. 70 x16MM/2.8 x 0.6in (small), 200 x 250MM/7.9 x 9.8in (large) Scope of Application: Vests, clothes, belts, waist protectors, shoes Features: Washable, lightly rubbed, insulated, no static electricity, resistant to pulling Package List： 1 x Heating Pad