Quote Originally Posted by Bill O
I think you can buy those insulating tubes, but you'll still need to blow the water back out. When its 0F even the insulation isn't going to be enough. The thought of not having water really scares me so I just go with the wide-mouth bottles when its that cold.
i hear ya bill! bottles are da way to go in da real cold. problem is i tend not to drink as much wif bottles as i don't wanna stop. but i guess ya have to in da real coldy cold. that or freeze up and have no water at all!

(though i have an insulated bota bag for wine. maybe i should just take wine. they say red wine is good for ya!)