Description:  1. Two heating zones, knee fever, covering the cold area.  2. Built-in portable source storge pocket, easy travel.  3. A button to heating, three gear temperature control, respond to a variety of environments.  4. General USB interface power supply, longer service life,anti water splashing and washable.  5. Fashion, warm, comfortable and breathable, and it's a good partner for your winter going out.     Specification:  Name: Electric Heated Trousers;  Material: Fleece;  Color: Black;  Size: S/M/L/XL/2XL/3XL/4XL;  Power Supply Interface: USB;  Power Supply: 5V/2A Power Bank(NOT Included);  Fever Area: Waist+Knee;  Heating Temperature: 25degree Celsius, 35degree Celsius, 45degree Celsius;  Function: Keep Warm, Windproof, Waterproof, Breathable and Abrasion Resistant;  Age Of Application: Men&Women.     Temperature Shift:(Manual adjustment)  High Temperature: 60 degree Celsius (Red Light);  Middle Temperature: 50 degree Celsius (White Light);  Low Temperature: 40 degree Celsius (Blue Light).     Washing Instruction:  1. Take out removable charger.  2. Neutral detergent is available, machine washable, hand washable.  3. Do not force knead or beat.  4. Put the USB interface into the pocket and pull up the zipper when washed in the washing machine, otherwise it will be easy to damag.  5. The trousers can be recharged after drying.     Warm Tip:  1. If not used for a long time,please do not plug in removable charger.  2. Do not use high temperature water or strong acid detergent.  3. Forbidden to use electricity for wet trousers. Please turn off the power and stop using if trousers are wet.  4. Use time depending on the capacity of removable charge.     Note:  1. USB Interface charging (Power bank is NOT included).  2. The color of the product may a little bit different from the pictures showed because of different light and display.  3. Manual measuring, please allow 1 ~ 3 cm error,thank you.     Package Included:  1 X Electric Heated Trousers (Power Bank is NOT Included).