Durable PS material: high quality polystyrene for durability, no odor, lightweight yet sturdy to stand firmly on your desk. Foldable and adjustable: easy to extend or fold by holding the sides and pressing the bottom; no disassembly needed; folds flat for compact storage when not in use. 3- or 4-compartment design: available in 3-compartment and 4-compartment versions, in multiple colors as shown; designed to hold A4 or smaller files, papers, magazines, notebooks, folders, books and other documents; open design lets you grab files from any angle. Practical and space saving: helps keep your desk clean and tidy in the office or at home; compartments can be expanded or folded as needed; sturdy enough for magazines, catalogs, cookbooks, ring binders and papers. Use scenarios: ideal for a home office or work desk, a reception area for magazines or catalogs, or a kitchen/study to organize cookbooks, printouts and files.