These durable storage bins are made of safe and waterproof PP material, ensuring long-term use. The collapsible design allows for space-saving storage and easy stacking. The top lid features grooves that match the wheels for secure stacking. With both front and top lids that open, accessing contents is a breeze. The bins are also moisture-proof and dust-proof with a two-way closure. Hidden rollers on the bottom make moving them a breeze. Perfect for closets, dorm rooms, nurseries, and more, these bins offer versatile organization solutions. Keep your space tidy and stylish with these functional storage bins.