• 【Large Set】Total of 312 pieces large set: 251 parts (effective parts that can be used for assembly! 63 Balls (including 3 fluorescent balls), dedicated storage bag (easy to store) x1 • 【Infinite Ways to Play】Truly a Pythagora toy You can see how they gradually learn to logically assemble things through play Assembling it by considering various destinations for the beads is fun The basic way to play is to interlock the grooves and create a three-dimensional structure The parts have a considerable volume, allowing for many combinations. You can assemble and disassemble them repeatedly, and with a bit of creativity, you can play in various ways. Simple-shaped building blocks can infinitely stimulate your child's creativity! • 【Commitment to Safety】Made with high-quality plastic (food-grade ABS plastic) material, BPA-free Play with confidence Child safety is our top priority! However, the accessories are very small Suitable for children ages 7 and up • 【Educational Play】The assembly elements of the blocks help develop imagination The parts have a considerable volume, allowing for many combinations. You can assemble and disassemble them repeatedly, encouraging creative play. Simple-shaped building blocks can infinitely spark your child's creativity! And, it seems like it can develop a sense of three-dimensionality as they visually follow the ball, and since they play with concentration, it seems like it can also develop spatial recognition ability • 【Quality Assurance】If there is any issue with the product, please contact us immediately. We offer free replacement or full refund