The overall shape and size of the boxes was extremely handy. The quality of the cardboard made them long lasting. The design of tear off edges made them easy to set up and even easier to rip on the right spots. The setup design was easy to follow and the interlocking top for the box was easy to form and I had no problems with the perforations there also. The box corners held up well as the corners on the lids as well. The boxes stacked easily for my ride in my move - and the boxes are all still in great shape after the 800 mile trip. Well planned design was easy to handle and held together well.
We have used these boxes many times here at the office but I have also used them for moving and organizing at home and never had any break open even loaded with heavy items.