I was skeptical when I read the description, but as soon as I got the Chilly Pad, I took it out of the package to examine it. Just from the humidity in the air, It started getting cold! I've never felt anything like it.
I haven't put it through any type of "performance" test yet; i.e., out in the field. But I deploy to Iraq in a few weeks. If it works this well over there, I recommend every soldier get one of these. This thing is amazing!