Does anyone know who makes it, or have a link?
Not sure what he had but I have one of these, you can get them at REI. I’ve actually never used it so I can’t give you any feedback.
I purchased them at Walgreens Drug stores and seen them at Hardware stores like Home Depot and Lowes. I have used it doing lawn work and my wife uses them from time to time on runs. Whether placibo or real it does seem to cool you, you just have to keep it wet. It has some sort of beads inside that swell and help hold the water better than a sponge.
What about the headband that Potts and Raelert wear? Any idea what that is?