[tzortn]

Read the book Body Electric by Robert Becker. His team did research on microcurrent I believe back in the 70's. If you understand electromagnetic fields you would not want to use these heating elements so close to your body. In my mind not a safe practice, I would rather dress warmer. But then again just my own personal opinion.

I have heard about using elements like this for extended periods of time such as using an electric blanket to sleep under being a bad idea. I would think that occasional riding use would not be any worse than other common electric fields.

In case any one is interested in more info on making electric vests and such you should check this out: http://www.shadowriders.org/faq/electricvests.html

[katman05]

Pretty good idea.