Thermal vest Warm padded vest jacket Electrically heated vest intelligent heating: 4 large heating elements, long infrared heat, fast heating, the maximum temperature can reach 45C. (Excluding power supply) 3 speed control: rechargeable intelligent dual control; zoned heating temperature control; safe low pressure; separate temperature control; 3 speed control; Smart chip; single-button temperature control; Three levels adjustment. Washable vest: No fear of tearing and washing for a long time; easy to clean; direct washing; Be sure to take out the power bank before washing. Put the USB interface back into the pocket and zip it up, use it again to ensure it is dry and then use it. (Machine wash in laundry bag) Applicable sports: Camping, skateboarding, self-driving, mountaineering, cycling, travel, diving, daily warm clothing, etc. The inner heating piece uses carbon fiber wire, no radiation, stable heat generation and long service life. How to use: 1. Remove the USB plug and connect to the mobile power bank. 2. Press the Powerbank's output switch. 3. Long press the temperature control button on the chest for 3 seconds to start heating. When the red light is on, it is automatic temperature control heating. 4. Manual adjustment for three levels of heating, the red light is continuous high-temperature heating, the white is continuous average temperature heating and the blue is continuous low-temperature heating. 5. Long press the temperature control button for 3 seconds and turn off the light to stop heating. NOTE: It must be used with Powerbank (power bank not included), and you can use your own power bank. Washing instructions: 1. Remove the power bank, add neutral detergent. Do not rub or beat it vigorously and use the washed clothes for natural ventilation and drying. Things that need attention: 1. If you do not use it for a long time, please do not connect to the Powerbank. 2. Do not use high-temperature water or strong acid detergent. 3. It is strictly forbidden to use electricity for wet clothes. Turn off the power immediately when you get wet in the rain. 4. The duration of continuous heating depends on the capacity of the power bank. Material: polyester packing list: 1 x heated vest (no power bank) NOTE: Please allow 2-3 cm difference due to manual measurement. In addition, different computers display colors differently, the color of the actual item may vary slightly from the images below, thanks for your understanding (1 inch = 2.54 cm)