Polypropylene 1. EXTRA LARGE 480 QT TOTAL STORAGE: Package includes 4 stackable storage bins (120 QT each, 480 QT total) — perfect for maximizing space. Translucent front lets you find items easily (no rummaging) while keeping contents private and clean. 2. MULTI-SCENE USE: Our plastic storage drawers are ideal for living rooms, bedrooms, closets, kitchens, basements, car trunks, etc. Stores books, clothes, snacks, tools, art supplies, and more — make organizing easy and enjoyable. 3. 2.6-INCH FOLDABLE & TOOL-FREE ASSEMBLY: No tools needed — set up in minutes. Folds down to just 2.6 inches per collapsible storage bin when not in use. Great alternative to bulky fixed storage cabinets; perfect for moving (avoids damage from transport). 4. FRONT DOOR & TOP LID FOR EASY ACCESS: Front door for instant item retrieval; top lid for full coverage. No lifting or unstacking required. Note: these closet organizers come with 1 LID. 5. STABLE STACKING & SMOOTH ROLLING: Interlocking grooves + dual side locks keep bins firmly stacked (even tall piles). Equipped with 360° smooth-gliding wheels for flexible mobility. 6. Product licensed under U.S, Patent Nos. 12,103,576, 12,275,446 and12,304,546 Effortlessly organize your home with our comprehensive closet organizers and storage system. Perfect for any room, these storage bins help you neatly store clothing, seasonal decorations, craft supplies, and office materials. For customizable solutions, choose storage bins with drawers that allow easy sorting, while stackable storage drawers efficiently utilize vertical space to accommodate your growing storage needs. When handling heavier or oversized items, the extra large stackable storage drawers provide exceptional capacity and durability. Protect your valuables with storage bins with lids, and for maximum coverage, opt for large storage bins with lids or extra large storage bins with lids, ensuring your items stay clean and damage-free. Our foldable storage bins offer outstanding flexibility, folding flat when not in use — ideal for apartments, dorm rooms, or compact living spaces. The wide range of sizes, including large stackable storage bins and large stackable storage drawers, lets you build the perfect storage configuration for your unique needs. With thoughtful design and reliable materials, these solutions offer lasting convenience, keeping your living space organized, clean, and clutter-free year-round.