250 colorful ZOOB Pieces, expandable and compatible with all other ZOOB sets in a great storage tub. Represents STEM principles, open ended toys to construct, engineer, explorer and experiment. ZOOB 250 Piece Building Set comes with 6 instruction guides to make 36 creations including a ZOOBasuraus or a ZOOBcycle (or create your own). ZOOB is not like any other building set - the pieces include gears, axles and joints that snap, click, and pop together! With rotating, spinning and extendable parts you can actually design a toy to play with, instead of just building something to look at. Create monsters-or vehicles-or monsters that turn into vehicles! The possibilities are as endless as your imagination! Recommended for children 6 years of age and older.