I bought my son 4 years and a half whose little brother 2 years likes to walk on, the circuit is super strong. In addition to all the hot wheel cars are compatible, no batteries required, just elastic stocks for the pitcher; but with the ramp system that clipe height not even need the cars make their pitcher looping in the wheel at breakneck speed. it's great my son delights dad and mom also gets started. in addition one can imagine its circuit, repeat it endlessly. Great product my son is delighted. It takes up space in the room but like most toys.
