It's nice and roomy, has plenty of space to fill more mess if you want,others it is waterproof with a strong stuff. It has a waist strap, which makes it easier on your shoulders if you're going a long way with a heavy load. we're mainly keeping it as our emergency supply for I haven't had much cause to use it, so I don't know what is the weight of this backpack will hold up, but I think it lasting a few years with daily use.