Has anyone tried these?

http://www.thermacell.com/heated-in...les+logo&utm_campaign=free+shipping+sale+2013

http://www.thermacell.com/heated-in...les+logo&utm_campaign=free+shipping+sale+2013
My wife bought me a pair for Christmas last year. Biggest piece of junk I've ever tried. If you'd like to try them, I'll send 'em to you for 1/2 whatever they sell for. How is that for being a good salesman?![]()
Bought a pair Thursday at Cabelas, wore them Saturday morning and felt no difference feet still got cold. Returned them today with no problems from Cabelas