The build quality and materials are mostly great. My only concern might be the leather like handle that snaps together and how that will hold up. The design works for the most part with the exception being the molle on the front pocket, the pocket could be taller and another row of molle strapping would enhance the usefulness. The zippers are pretty heavy duty and seem like they will not get buggered up with a bit of sand / grit. The stitching is well done and looks ample.The bag comes with 4, 3600 series "Plano" boxes standing vertically inside. I found a 5th standard depth 3600 box fits just right, laid out horizontally on top of the 4 with the lid closing snugly. The shoulder strap and connectors seem sturdy enough. In use the shoulder straps can bear down on the lid latches, mine have un latched a couple of times. I rigged some 1/8th inch bungie cord in a "X" pattern over the top with a buckle in the middle... problem solved.Overall it carries a lot of equipment and seems like it will hold up for quite a while. Better latching lids and a more confidence inspiring carry handle would make this a solid A+, but I'm going to call it an A with those two factors in mind. Regardless of the grade given it's a great value for the current price (under $60.00) and worth looking at.