Originally Posted by Machka

What's wrong with stainless steel?


But if you want to keep your own bottle ... I'm serious about using a sock. Buy a pair of thin, small cotton socks. Place one sock over your bottle (from the bottom, not over the top). Soak the sock by running it under cold water (or dipping it in a stream or whatever). Air flowing over the wet sock will provide an air conditioning effect.

Oh, and ... the night before your ride, fill your bottle 3/4 full of water and put it in the freezer. The day of the ride, top it up with cold water.