Our Bass Pro Shops Heated Vest keeps your core warm on the coldest adventures. 3 built-in heating panels include 1 at the top of the back and 1 on each side of the chest, providing warmth where it's needed most. High, medium, and low heat settings et you fine-tune to your needs, while a power button on the outside of the right-side hand pocket makes it easy to control. Comes with rechargeable 5V, 10,000mAh battery and provides up to 8 hours of warmth on low setting. Made of 89% polyester/11% spandex for softness and mobility-freeing stretch. Imported. 89% polyester/11% spandex construction Heat panels at the top of the back and on each side of the chest Soft and stretchy for maximum comfort 3 heat levels let you fine-tune to your needs (low, med and high) Easy-to-access control button Comes with rechargeable 5V, 10,000mAh battery Provides up to 8 hours of warmth on low setting Hand pockets