Originally Posted by
3speed
I've wondered for a while now if bottle color would affect water temperature on a sunny day. Has anyone looked into this? Would a white bottle stay cooler since it reflects the light rather than absorbing it, black the hottest, etc? What about the stainless bottles? Should they be the coolest if you had a mirrored surface to reflect all of the light? Though metal slides always get scorching hot in the summer, so maybe those bottles would be the hottest?
My experience riding in hot weather has shown me that darker colours are not a good idea, so only use lighter colours. How much a difference I don't know, but using the polar type ones and lighter colours makes a difference, in my opinion anyway.