So these are great little boxes for shoes . They keep all my shoes nice and neat and easy to find . They feel a little flimsy but once they are assembled they are sturdy. I will say they are a little bit of a pain to assemble until you figure it out . The most important thing is to make sure the front  and back tabs are facing the same direction. So the top tabs need to match and the bottom tabs as well . I circled one to show what I mean. If they are not the same they will not stack right . The directions weren’t clear on that and I had to figure out how to take one apart and start over .After I figured that out is was a piece of cake .