So trying to figure out where the heating coils are on the Santi heated under suits. Per their literature they heat " whole torso, thighs and arms", however I can't find a single picture or documentation of how far down the legs/arms heat runs, if at all. If the coils are the same across the BZ400, Flex 2.0 and the heated vest tempted to just go for the vest and keep my other undergarments the same.