Organizer offers four compartments to store your office essentials for easy access. Three vertical compartments hold pens, pencils, markers, scissors and other items (sold separately). The larger, horizontal compartment accommodates standard envelopes and note pads. Design is engineered to stack or bridge other accessories of the Fellowes Earth Series. Organizer is made of earth-friendly, 100 percent recycled durable pulp fiberboard and is completely recyclable. Fiberboard is formaldehyde-free and colored with water-based ink. Connecting rubber O-rings are made from recycled rubber.