1 Lithium Polymer batteries required. (included)
Soft shell (6000mm/H2O Waterproof Index), Water Resistant, Wind Resistant Inner:
Polar Fleece (5000g/M²/24h Breathable Index), Washer Safe;
Machine washing: Accepted
Zipper type: SBS
3.7 V, 10000mAh Battery; Input:5.0V/2.1A.Working hours up to 10 Hours
With USB port, Can also power most compatible devices such as cell phones and computers.
Cordless, Portable & Rechargeable
Carbon fiber heating technology
3 Core warming zones on Left Chest, Right Chest, and Mid-Back
4 Levels Temperature Setting (Pre-Heat, High, Medium, Low),3 heating zones (left chest, right chest and mid-back).
Perfect gift for climbing, hiking, hunting, motorcycling,outdoor sports in cold. Enjoy completely the outdoor activities in winter.