Well, now this is going to be a wild discussion. It will become a contest between creature comfort or a macho event. There are people out there that claim that cold fingers do not bother them and grin and bare it until the fingers are too stiff to pull a trigger and wait until they have a good case of Chilblains or even worse frostbite just to prove how tough they are. Cold weather injury is not being tough, it's being, shall we say less than intelligent. Hand warmers as well as foot warmers have been around longer than I have, and that my friends is a very long time. I've used hand warmers that used lighter fluid and actually had a little glowing flame held within a metal container covered with a velvet bag. They worked well, matter of a fact sometimes too well and would actually cause burns. Another one good for this was a clamsell metal container lined with a fire resistant material where you actually burned a punk like stick to produce heat, which again could and often did get too hot and cause minor burns. Then there were battery powered socks and gloves, that worked relatively well providing you saved up for a year for batteries and were able to haul enough batteries around to change as often as the batteries went dead, which was quite often. These days they sometimes have rechargable batteries, but the heat only lasts as long as the batteries do. which is not going to last all day. So what is the best solution to keeping warm in the winter, chemical hand and toe warmers. They are small, produce sufficient heat to prevent cold injury without burning and depending on who makes them last between 8 and 12 hours. A package of 10 will set you back $8 or so. If you don't use them all, they will be just as good next year. Cold is nothing to play with, it can cause serious injury or even death. It is insidious and can creep up on you, make you tired and if you fall asleep you may never wake up again. Stay Warm and Stay Safe my Friends.