A Noah Shachtman piece in Wired about tech for soldiers spends some time on this same device from Stanford and it describes how the device (in an earlier form) could also be used for warming:
Towards the end of the piece, the author describes being being in a bathtub with cold water and, after it starts to affect him, the device is used to warm him:
"But his stories get harder and harder to follow. I’ve started shivering again--all across my legs and chest, muscles pulse to a manic rhythm. And then I start having tremors. My thighs jackknife to my chest, unbidden. I moan, and darkness closes in from the edges of my vision.
Then, just like on the treadmill, Grahn takes my wrist. He slips each of my hands into a modified Glove prototype. This time, the metal hemispheres inside are hot to the touch--113 degrees. After two minutes, I can think again. The tent comes back into focus. You can stay this way indefinitely now. "You’re at a thermal equilibrium; the heat going into these two hands is equivalent to what’s going out of the rest of you," Grahn says. "Now you’re uncomfortable again -- merely uncomfortable. That’s a huge difference when you’re talking about survival." The water is still bitter, of course. But now I can take it.
