ZOOB BuilderZ 250 Piece Kit 250 colorful ZOOB Pieces, expandable and compatible with all other ZOOB sets Create the ZOOBasuraus or a ZOOBcycle Represents STEM (Science, Technology, Engineering, and Math) principles, open ended toys to construct, engineer, explorer and experiment Includes 250 ZOOB Pieces in a durable plastic storage tub and 6 instruction guides Recommended for children 6 years of age and older