Join Date: Nov 2016
Location: America's Dairyland
Since we're sharing low-tech cooling solutions, I'll include mine.
In the morning before a hot day riding, I fill my Camelbak 1/2-3/4 full of ice (crushed or small cubes; not a solid block, for reasons that will be explained later). I then top it off with water. I stuff the Camelbak down the front of my riding jacket. Not only do I have cold water to drink for hours, I also get the cool bladder sitting against my chest for much of the day. If necessary, I can top it off with ice and water at just about any convenience store or restaurant.
In the event of a crash, the bladder would likely burst and disperse the ice water. Which is why I don't want a solid block of ice inside.
If it's a good day to wash the bike, it's a better day to ride the bike.