Review on 5200MAh Electric Rechargeable Double-Side Hand Warmer | Portable Pocket Hand Warmers & Phone Charger For Outdoor Sports | Heat Therapy Great For Women & Men In Winter By BRIGENIUS by Michael Adams

I got this for when my father for when he goes to vehicle auctions out in the cold during the winter. It is perfect to slip in his briefcase or in his coat pocket without being bulky. Long battery life (4-8 hours out of a full charge) will definitely come in handy in case he forgets to charge it after each use. It warms up so quick! Definitely recommend!