Couloir

I'm curious as to what you guys use when it's really cold (<20*F) and your hydration tube freezes? I have tried many things: tube/mouthpiece insulation, blowing the liquid back into the pack after I drink (though this becomes very tiresome sucking out the air for the next drink), and drinking more often hoping the tube won't freeze. I have long used a water bottle and resorting to the OR Water Bottle Parka. But I really want to keep using my hydration pack. Is there some alternative or do I go back to the Parka when it gets really cold? Thanks!

Cluck: thanks for the photo...chilling. I sent it to my wife (probably a dumb move). Her response, "you're done with this hobby!" Cluck/Iain: Any additional info as to how they were climbing? Any pro in place? My impression is that they were using some but that it pulled out?? Where on the headwall did they fall from? Anything to help us all take something away from this tragedy...

Nice reporting Barkernews...thanks for the frequent updates.