This is a strange set of document organizers. I expected 3 pieces that could easily be moved around or stacked as needed, but the footed stands don’t attach to the bottom of each tray. They just sit on top of the feet, so when you pick one up to move it, the feet detach and you have to line them up again. The feet do attach to the top of each tray if you’re going to stack them. So if I need to separate the trays from the stack, I end up with a tray with the feet attached to the top, not the bottom. So weird. I don’t feel comfortable using them as individual trays because of this, so I have them stacked together for my daughter’s homework sorting. So far it’s working, but I’m worried that she’ll attempt to move them and the lower feet will just fall off. It already happened twice to me.