My problem is strength of the bag. Once I put all of my gear into a bag, if I start adding documents or manuals, the bag begins to break down. The strap becomes

My problem is strength of the bag. Once I put all of my gear into a bag, if I start adding documents or manuals, the bag begins to break down. The strap becomes worn, and the point of failure of where the strap connects to the top of the bag, usually goes first. I wish these bags had a weight rating.