These are CD cardboard shipping boxes. The boxes measure 5 7/8" x 5 1/4" x 2-9/16" (149.225mm x 133.35mm x 65.08mm) when folded. Each of the boxes can hold 5 CD's! The boxes are made of #200 test brown cardboard and are regular, slotted containers. These are perfect for shipping CD's to customers, or for storing your own CD collection.