Product Description Experience advanced warmth technology with this 21-zone self-heating vest, designed for maximum cold-weather comfort. Featuring strategically placed heating panels across core body areas, this windproof polyester vest delivers rapid, even warmth where you need it most. Powered by any standard USB power bank, it adjustable temperature settings for customized heat during fishing, hiking, commuting, or winter sports. The slim-fit design provides exceptional mobility while the Windstopper N2S technology blocks chilling winds. With universal sizing for men and women, this versatile heated vest combines performance heating with everyday wearability for any outdoor adventure. Product Specifications Feature Specification Heating Zones 21 Independent Areas Material Polyester with Windstopper N2S Power Source USB Power Bank (Not Included) Fit Runs Smaller Than Standard Sizing Gender Men's & Women's Styles Temperature Control Adjustable Heat Settings Primary Use Fishing, Hiking, Outdoor Work Key Features & Details Advanced 21-Zone Heating System: Multiple independent heating elements distribute warmth evenly across torso, back, and sides for comprehensive cold protection Adjustable Temperature Control: Three customizable heat settings allow personalized comfort levels from gentle warmth to maximum heating power Universal USB Compatibility: Works with any standard power bank for extended outdoor use, providing hours of continuous heat on a single charge Professional Windproof Construction: Windstopper N2S fabric technology blocks wind chill while maintaining breathability for active use Optimized Active Fit: Slimmer cut design allows for easy layering and unrestricted movement during hiking, fishing, and other outdoor activities Frequently Asked Questions (FAQs) Q: What power bank capacity is ? A: A 10,000mAh power bank typically provides 4-8 hours of heat depending on the temperature setting used. Q: Is this vest machine washable? A: The heating elements are durable, but remove the USB connection and follow specific care instructions to maintain performance. Q: How should I select the correct size? A: This vest runs smaller than standard sizing. We recommend ordering one size larger than your usual clothing size for fit. Q: Can I wear this in rain or snow? A: While windproof, the vest is water-resistant but not fully waterproof. For heavy precipitation, we recommend wearing a waterproof outer layer. Q: How long does it take to heat up? A: The heating panels reach maximum temperature within 2-3 minutes of being powered on, providing almost immediate warmth.