150pc Magnetic Racetrack Set Picasso Tile Brain Teaser and the car shell is and the car shell is safe for high temperature boiled & water proof so kids can kick their way to victory without breaking household goods pay attention and utilize their imaginations to build the most versatile race track designs with the various shapes and pieces such as A) 2 way split B) 3 way split C) speed bumps D) 1 8 turns E) curves to create the structures required to keep the cars running in loops F) Street and traffic sign set is included to mimic the environment and maximize the pretend play fun when playing in teamwork group or independently