These White Plastic Display Trays each come complete with a handy 2 Compartment Black Storage Tray Insert to get you up and running with your next Organization Project. They can be used for so many things,.. Use it to stack papers, sort small items like pens, cards, jewelry. And its compact size means that you can put it just about anywhere! Each Tray Organizer is made out of a highly durable plastic material,.. Which means that they wont degrade over time and they'll never, ever fade! They’ve also been specially designed to stack together, with molded feet on each tray that interlock with the tray below them. You'll be able to stack these beauties 20 high if you like for storage and not lose any of the quality or stability. Each Tray measures at 14 3/8" x 8 1/4" x 1". Each compartment varies by size.