S-Boston Pocket Hand Warmer, Patented Technology, Black x1 + Red x1, Self Ignition, No Naked Flame, Up to 20 Hours Heat : Amazon.co.uk: Sports & Outdoors
HeatBank 9s Rechargeable Hand Warmer | Zippo USA
Boston Black Color Deluxe Electric Ignite Metal Pocket Hand Warmer - reuseable, no Mess and uses Regular Lighter Fluid - Black : Amazon.in: Home & Kitchen
HeatBank® 9s Rechargeable Hand Warmer & Flashlight | Zippo USA