The Mesa Silla Solid Wood Trolley is constructed of sturdy, solid wood in natural finish. This three-tier trolley is equipped with heavy duty synthetic casters, two of which are locable for high stability. For your fast growing child, Mesa Silla Solid Wood Trolley functions as a mobile library of books and collectibles. The mobile trolley provides you with plenty of space for displaying books that are easily accessible. You can easily slot the 2 in 1 tabletop book rack onto the available brackets on the trolley to create even more storage/display for books.