When I used to travel across the country, the desert southwest, on a motorcycle in the heat of summer here was my solution. Besides wearing a CamelBak to hydrate on the go, I would regularly stop at convenience stores and truck stops. A chance to stretch but also I'd get a large cup of ice to fill ziploc bags. Then stuff my pockets with them. Helped keep the core temp down. <div><br></div><div>Perhaps the ice bags under the rat cage? A tiny 12v fan blowing across them?</div>