ZOOB BuilderZ 125 Piece Kit ZOOB pieces are expandable and compatible with all other ZOOB sets Represents STEM (Science, Technology, Engineering, Math) principles  open ended toys to construct, engineer, explorer and experiment Create the ZOOB Crown, Pterodactyl or DNA Includes 125 Colorful ZOOB Pieces in a durable plastic storage tub and 5 instruction guides, for basic connections & 20 creations Recommended for children 6 years of age and older