These are sturdy and as advertised.I needed a heavy duty box for moving, and these hit the spot. I'm an actual Banker, so bankers boxes are a part of my life. I ordered these to handle my library books on a cross country move, and they performed with flying colors.These are the Lift Shorts of banker boxes. They will teach you how to file, what to file, and how to use your files. Oxford comma used for clarity.Part of assembly process/folds includes a cardboard padding of the hand hold slots that make lifting a load much more comfortable.Loved the boxes, but have one missing cover. Will contact the company tomorrow. Will update review later The company sent me extra pads for registering the product, I still have to use it a bit more before I can comment on its performance. Will update later.Expensive, but superior construction. Raw edges are papered over, which makes lifting easier on hands. Highly recommend for moving and/or long-term storage.These boxes met my expectations since I had used similar boxes before. The cuts were clean and most of the waste chaff was removed. Nice box!Could really use a label and even a set of big digits to number the boxes. Must label each box or have a mystery about what is inside. Twenty or more unlabeled boxes makes for mystery and requires opening to see content.FINALLY, I found the boxes I love, in the size I want them, with the modifications I like! I have used this brand of storage boxes for years but they are hard to find as many office supply stores do not stock all sizes and modifications. AND, the PRICE is usually TWICE that of other brands WHEN I could find them. Buying 10 boxes, I saved a bundle and I got EXACTLY what I wanted for a change--no compromising. Bye-bye big box office supply stores!Las cajas de cartón Bankers, son un muy buen producto. NO fallan, resistentes y con buenos refuerzos.Si las buscas con paciencia y la es encuentras en buen precio, excelente relación costo beneficio.