Ergonomic design: adjustable metal bookshelf can reduce and neck pressure; children can effectively correct poor reading posture. High-quality materials: The bookshelf is made of high-grade stainless steel and steel, and the is polished and painted. It is firm, smooth, rust-proof, not easy to break, easy to clean, simple and generous in appearance, and has rounded corners to protect hands from injury or scratches . Foldable and portable: Quickly fold and easy to store. Easy to carry and use anywhere. It is convenient to fold up and can be placed in a backpack for outdoor activities or storage without taking up too much space when not in use. Suitable for families, schools, offices, libraries, dormitories, etc. book shelf is adjustable, and the movable back support has various notches, and the height and angle can be adjusted according to needs. Promote proper posture to improve spine health. : Our bookshelves are sturdy and , can withstand recipe books, magazines, textbooks, drawing paper, documents, tablets, and are perfect gifts for mothers and children on birthdays and holidays. They can be used in home kitchens, schools, offices, Library, dormitory, etc. size:20x15.5x19cm Material:metal colour:Black Package Contents: 1 x Textbook shelf Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.