Originally Posted by Chris_F

I will try that. My current setup is a camelback. Since it sits on the back and gets body heat it doesn't freeze. But the tube can, so every time you drink you have to hold the tube above your head and open the nozzle to let the water drain back in to the bladder, then you have to blow it out to make sure. And then sometimes the mouth piece still freezes so you have to stick it in your shirt for a few minutes to thaw it.