Durable: Convenient and durable, these boxes feature handy clips to keep your belongings secure. Stackable: These stackable plastic boxes are the perfect storage solution for tucking away books, clothes, office equipment and more! Sizes: Choose from five sizes (see full details). Material: Made from 100% food grade polypropylene. Storage boxes: Get a set of five storage boxes. 5 X Plastic Storage Boxes | Living Social