Features: Space Saver: Thissturdy baskets is a helpful tool for organizing your classroom or household items on countertops, in cabinets and on shelves. Built to Last: Each large plastic book organizer binis made of premium plastic material to ensure durability and years of use. Wide Open Mouth: This tool bag features with wide open mouth for easy organization and access. Put in or take out your books quickly. Wide Application: Organize books in your classroom, kid's room or playroom. The Book Bins hold books upright and keeps them organized, and books can be divided by reading level, author, character and more. Quality Assurance: Our product will definitely win your heart with its high quality! If you have any inquiries, please contact us. Specifications: Material: Plastic Size: 1#: 20.5*21*12cm 2#: 31*20.5*15cm 3#: 28*21*13.5cm 4#: 33*23*15.5cm