The Zippo HeatBank 9s Plus Rechargeable Hand Warmer fits snugly in a coat pocket ... which defeats the purpose of being an on-the-go charger. None of the settings were comfortable for bare hands ...

Tuck the Zippo hand warmer into your jacket pocket on a winter ... This warmer also doubles as a small device charger, with a 5,200 mAh lithium-ion battery bank and about enough juice to charge ...