Specifications:  Color:Blue Product Name: Electric Heated Vest Gender:Man Material:Cotton + Polyester Heating Part: 16 Heating Areas Function:Keep Warm, Heat Size:M-4XL Temperature: LOW(White Light):35℃ MID( Blue Light):45℃ HIGH (Red Light):55℃ Power interface's Interface Power:5V 2A/2.1A (Power Bank Not Include) Features: 1. Efficient and Comfortable Heating: Enjoy instant heat with the 3-second rapid heating technology, and choose from three temperature settings for personalized warmth. Experience up to 4-6 hours of continuous heating on a single charge (based on a 10000mAh power bank; approximately 8 hours). 2. Safe and Radiant-Free Design: Our heated vest is designed with your safety in mind. The heating elements are engineered to prevent overheating or self-ignition, ensuring a secure and worry-free experience. 3. Targeted Heating for Maximum Effectiveness: Say goodbye to cold spots Our vest specially-designed heating zones that target the neck and back areas prone to feeling chilly. Stay warm and comfortable throughout the day, regardless of the weather. 4. Tough and Easy to Clean: The vest's elastic waistband and ribbed construction provide flexibility and a snug fit. The carbon fiber heating threads used internally are non-conductive, unlike metal copper wires, which means you can easily wash the vest in a washing machine without worrying about any damage to the heating components. 5. Versatile and Convenient: The USB charging allows you to power up the vest using any compatible power source, such as a power bank or laptop. This makes it extremely convenient for outdoor activities, travel, or simply staying warm during daily commutes. Stay cozy wherever you go (Power Bank Not Included) Package includes: 1 x Heated Vest (Power Bank Not Included)