On Thu, Jul 19, 2012 at 10:50 AM, Greg Hummel <bighummel at aol.com> wrote: > Hmmm, they don't say how much the heat packs weigh; > http://www.gizmag.com/trekmates-flameless-stove/23366/ These are not new. http://en.wikipedia.org/wiki/Flameless_ration_heater