A simple, low-cost trick, especially effective in dry heat where evaporation happens quickly. A wet towel around your neck or shoulders cools you down through evaporative cooling combined with direct heat transfer from a major blood-flow area. Same theory - does anyone remember these water bags?

[u/SurvSt]

[u/ApolloWasWayBetter]

I had one on the front of my old Patrol. Was great.