I tend to go out for rides that are about 3 hours long, give or take. It's also frequently 100+ degrees here so I need to hydrate at least halfway through the ride. I'm struggling to figure out an easy way to carry a thermos of cold water. I have a few herniated discs so backpacks or camelbacks don't work too well. I have a seat cowl so strapping something behind me doesn't work too well either. I'd rather not put something that hard and bulky into a pocket due to risk of injury should I crash. I'd also rather avoid bulky bags mounted onto the bike or tank since this would basically be all I need to carry 99% of the time. What I'd like is to find a specifically-designed thermally-protected carrier for water that mounts somewhere unobtrusive on the bike... does such a thing exist? Am I missing an obvious option? Something akin to the old "water bottle mounted onto the down tube of a bicycle" only for a motorcycle and that would keep the water from heating up too much in the Texas weather. Thoughts?