I can't say enough about how awesome Nalgene bottles are. I have seven of them. I use them pretty much every day. Throw them in my backpack and go. Whether it's at school, on the trail, at work, at home, working out, I pretty much always have at least one Nalgene with me. I took three to Iraq and Afghanistan with me (I was a Marine), because issued canteens suck, and I always have problems with camelbacks leaking/breaking/generally sucking. I've boiled water, used them as weights on the end of rope to get it over a tree limb, to hammer tent stakes, I use one to carry my first aid/emergency kit, used them to make field koolaid (no left over taste!), dropped them off cliffs, used one as an improvised football, and even used one as a field expedient weapon in close quarters combat. Bottom line: a Nalgene can save your life.