I like the idea of them, but anytime I have used them in the summer they sweat pretty bad (picking up dirt and stuff).
I found these....anyone have it?
http://www.freshwatersystems.com/p-5037-neo-tote-12oz-insulated-water-bottle-holder.aspx
They are cheap and seem like they would do the trick to keep the liquid cold and the dirt off. The shipping is pretty high and I can't find them anyplace else. If anyone is interested in getting one we could share the shipping too!