Steel, Particleboard[Stylish and Versatile] This 5-tier bookshelf features rustic brown shelves and a black metal frame, lending an industrial charm to your home office. Its versatile design makes it perfect for displaying or storing items in your living room, bedroom, and more[Spacious and Space-Saving] Standing at 11.8D x 29.1W x 59.1H, this rustic bookcase offers plenty of storage space, while its vertical design allows you to maximize the use of available space[Thoughtful and Considerate] This living room shelf comes with side bars to prevent items from falling off. Adjustable feet keep the bookcase balanced even on slightly uneven floors[Strong and Stable] Crafted with a robust steel frame and quality particleboard, each shelf of this 4-tier bookshelf can hold up to 66 lb. The rear bars and anti-tip devices add to the stability[Easy-Peasy to Assemble] With numbered parts and easy-to-follow instructions, the assembly of this industrial bookshelf is a no-brainer. Set this bookshe