Specifications: You can directly put it into your jackets, vests and other clothes for heating. Carbon fiber heating pad has the characteristics of tensile resistance, washable and good stability. Lightweight and portable, convenient to take with for outdoor camping or other activities on winters. 3-gear temperature adjustable, the maximum temperature can be heated to 50 degrees Celsius, making this winter no longer cold. Item Name: Heating Pad Material: Non-woven Fabric + Carbon Fiber Voltage: 5V Powered by: USB Features: Adjustable, Washable, Convenient Length: 11cm/4.33", Width: 7cm/2.76", Thickness: 0.08cm/0.03" (Approx.) Wire Length: 45cm/17.72" (Approx.) Main Wire Length: 130cm/51.18" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3/5/8 x Heating Pads