These bins are the perfect size for storing extra sheets. I had three sets on the floor of my closet. Now, they’re neatly stacked in these boxes and protected from dust. (There’s actually room for one more set of sheets, so I’m using the third box for some extra curtains.) At first, they seemed a little flimsy. Thankfully, the packet includes sturdy, stiff boards to insert on the bottom to keep them well-shaped. And even though they’re somewhat flimsy overall, they stack nicely. However, if you are planning on stacking them, you shouldn’t put anything too heavy inside them.