These containers are perfect! I am a teacher who teaches from home. So theseAre perfect for my desk. They stack nicely and I can organize my dry erase markers, markers, crayons, colored pencils, pens and pencils.I like these but I wish the sides closed more securely. They come off inside the kids backpacks but if it’s in a desk, I think it would be ok.Nice stackable cases. Holds a little over 1 pack of large markers. The locking handles aren’t super tight so they are easy to open which is good and bad. It would be nice if they were a little more secure, but they work out well and are clear enough to see through.I do Operation Christmas child boxes and I ordered these to use in some of my boxes. I am impressed with the quality. The colors are nice as well.Lids could be a little tighter.These are the cheapest boxes ever. One of my lids came crushed and the only reason I kept them was because I needed them right away. What a waste of money!!!!!Way too small. The locks at the ends break easily.El tamaño es muy util, que tenga varias cajas por paquete. El cierre necesita mas preciòn.