These are "a must have" for staying warm

Verified Buyer Reviewed by Tina the birder from Westport,CT on Thursday, February 18, 2010
When I'm going to be out in the field birding all day and I need more than warm socks and boots to keep my feet warm,these footwarmers do the trick.I keep a supply of them along with the handwarmers in my car for extra protection against the cold of winter.
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