The Gibraltar Convertible Hardware Backpack Bag is designed for people looking to lighten their load and free up their hands. This handheld hardware bag can be converted into a backpack or a shoulder carry bag with the change of a strap. Measuring 34 in. x 12 in. x 11 in., it is pre-formed and made with high-test nylon. Sandwiched between the outer nylon and padded inner ABS material creates structure, reinforcement, and durability. This is a great bag for people concerned with light to medium weight hardware. 3-Way Convertible Hardware Bag. The bottom panel for backpack use is lined with ABS and reinforced with cross-body straps. 1 pair of carry straps, and 1 pair of adjustable-length backpack straps with strap pads, all equipped with dog clips for easy addition and removal. HEIGHT WARNING: The backpack and shoulder functions of this bag are specifically designed for lighter weight configurations. To avoid personal injury, do not exceed 50 lbs.