Barely noticable warmth occasionally.

Reviewed by iamamultitasker from Northern California on Tuesday, December 2, 2014
I bought a bunch of these at a discounted price due to the positive reviews. My experience has been a lot further south of positive than anything I've bought at STP. I've opened 4 of these so far.

I bought these to keep my feet warm while kicking around in my pontoon boat on local lakes. The first pack worked pretty well for about 2 hours then went completely dead. The second pack did not do anything at all AFAIK. The third pack was equally useless. The fourth pack I have on right now just to see how much warmth they might have in regular shoes and it's hard to tell if they're working or not.

So far, these have been a waste of money.
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