It may take a minute to figure out how to assemble these but it is really about 15 seconds per full box and lid. And then you have a huge and really sturdy box that will hold more than you think! I have two sets and used all 20. I have moved more times than you would ever believe and that includes two countries and these are the very best boxes...no, helped made of cardboard, I have ever used in my life! I have stacked the heaviest on top and absolutely no flattening below. Have stacked them crookedly and have no issues. I have done many things to these boxes and they have held up to every test. And tests they were! You obviously know stacking loaded cardboard boxes is an art that must be carefully and intelligently done, right? I thought so! Whew! For moving, storage, fortresses for rats, well...the toothless ones because they would just chomp away, now wouldn't they!?! They will hold so much so well it is terrific. Clothing, electronics, wigs, art, art supplies, crafts, shoes, food, garden gnomes, forest pixies -- open handles are helpful -- anything you think can and should go in a box for a short time or forever, will be happy and safe in these. Well, garden gnomes and forest pixes can talk, as cap paintings with mouths, but there rest, well, just trust the boxes. They came in mint condition, both sets of 10, and I could not be happier! Well, if there were money and jewels in them I might be.