TuffRhino.com has the Miracool Cooling bandana for $1.77.
The Miracool evaporative cooling bandana contains water-absorbing polymers; to use you soak the bandana in water for a bit and then wear the slightly soggy bandana. The water slowly evaporates and keeps you cool, which should work better than just wearing a wet cotton bandana. I’ve never used one, but many people seem to like them and I’m considering getting one if this unseasonal Northwest heat wave continues. Their welding beanies look useful as well. Anyone using them?
Miracool evaporative cooling bandana [tuffrhino.com]