On Tuesday, I demo'ed the Sidi Heating Insoles. All I have to say is wow! The temperature was 27F when I rolled in my old road shoes with Pearl Izumi shoe covers on. I had just one pair of socks on too. I was out for close to two hours before I got to work and my toes were nice and warm. The return trip was at about 40F without the shoe covers on. Nice and warm too.One basically plugs the insole it to charge the integrated lithium polymer battery in the insole. There is a little wireless remote to turn them on and off. They were a bit thicker at the heal and mid-sole than I like, but.... wow... warm feet. The only down side to these things is the pricing, $300. That and they have about a three hour run time. I am really being tempted.
I may see if I can find a pair of the Hottronic m3 or m4 foot warmers to try. Or... I may just buy them out right. The real difference that I can see between these and the Sidis are that these have an external battery pack and they cost half as much. The run time is considerably longer and I think that I could probably re-battery them when the batteries fail. Or... just buy the replacement power packs.
Then there are those electric gloves....
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