I bought this specifically for alpine use. I'll be climbing Mont Blanc in a few months and everything I read said to use a hard Nalgene bottle. I'm going to use a smaller pack than is usual so "space" is at a premium. I need a collapsible bottle that can withstand high altitude. The Dromedary Bag looks like it will do perfectly. Very well built with solid construction. Haven't tested it yet in high altitudes, but am confident/excited to see it exceed my expectation.
This review was written in the old system and had content requirements that are different than reviews written today.