QUALITY MATERIAL: Made of MDF wood/White, painting finish, wont rust or corrode. uniform color, baffle design, durable, and healthy and environmental protection, strong load-bearing. Humanization Design. The bookshelf has 2 main parts. The position and the distance between two parts can be adjusted to best fit your needs. 2 Parts can be used separately or pushed close together to create a small shelf rack, or pulled further apart to create a longer shelf, or set together at any angle you choose to best fit your space and your style, maximize use your space