It dose have draw backs,the hose dose git dirty and tacks buying the cleaning tools. You have to keep it safe(there thin and puncture in a pack). The set up can cost like 60 bucks without the dam pack! They have a filter to take the bad taste. The best part is in hot weather you can have cool water all day,just put ice in and wrap it in spare clothes,it stays there so stays cool. And as you drink it just shrinks in your pack,great when your on the go or just lazy. Saved my ass one time(literately),got hit buy a car,went over the top,landed on my lower back,the chrome messenger bag with half full camel back,broke the fall,would have broke my ass,but broke the bag. Solved the price problem too,fits down my pants!