To use the Hot Wheels Monster Trucks Roarin' Rumble set, simply place the included trucks and cars on the track pieces. You can arrange the two track pieces in three different ways to create different stunt scenarios. Let the vehicles race, crash, and perform stunts like backflips. The emcee Reggie cut - out is just for fun, you can imagine he's commenting on the action. This set is for kids aged 4 to 8. Be aware that it's not compatible with some Hot Wheels vehicles. When it comes to maintenance, keep the set clean and dry. Avoid exposing it to extreme temperatures or rough handling to ensure it lasts a long time. If any parts get dirty, you can gently wipe them with a soft cloth.