In reply to chris_s: Good pack - agree but they should have reinforced the base, it's just a double layer of thin dry bag material seperated by some thin foam. I punctured mine first outing, don't dump it down when full on to sharp rocks... Also the lid doesn't float, so interferes with a helmet when over stuffed. And the shoulder straps twist and the sternum strap undoes itself. Other than that great sac - light, really well balanced for climbing and waterproof of course. I'm 6' 3" and regular back size is OK for me