This is a simple card box to hold and organize any TCG cards (Magic, Pokemon, etc). The tray is designed so that you can fix 6 of them in the drawer of an Ikea Hemnes Cabinet. The cards will fit in sleeves, but I don't think toploaders fit. I wanted a clean way to store cards in this drawer unit and this is a very space-efficient way to do it! The trays fit in 3 rows of 2, and that makes it a bit easier to lift them out of the drawers when needed. The front top edge of the box has a small lip to make it a little easier to grab and lift one of them out of the drawers.