Collapsible Storage Cubes in Blooming Colors! These storage cubes fold flat for storage when not in use. They are perfect for pencils, rulers, markers, manipulatives and all sorts of classroom items. Each cube measures approximately 5" square. The collapsible storage boxes are heavy cardboard covered with a polyester fabric in vibrant blooming colors. Set of 4. Sold as 2 sets for a total of 8 storage cubes.