Levels of Discovery Sling White/Blue Book Shelf (Levels of Discovery Sling Book Shelf White Blue). Help reduce clutter in your child's bedroom or play area by adding this vertical book shelf to her space. Four blue fabric pockets offer room for storing activity books and board games to encourage your child's interest in reading. A white wood frame provides sturdy support and durability. Material: MDF, Wood Style: Traditional Assembly: Assembly Required Finish: Painted Color: Blue Dimensions: 24 inches high x 11 inches wide x 25 inches long