Not to be too personal Pete, but just how tall are you?

I had a couple cooling vests.
The polymer one got rottenly hot in no time (hot and wet). I gave it away.
The one with the water holding crystals was much better. I soaked it full, put it in a big plastic bag, and refrigerated it until I left. When I put it on later it was so cold I had to take it off again.

The water holding crystals also are used in neck wraps and sweat bands/doo rags, and those really work well (without the full body wet soak; the cooling vest fully charged with water leaks down into your crotch and ass over time, and I didn't care for that).
Dude, did you piss yourself? 