Using these Hot Wheels Mario Kart vehicles is super easy! Just place them on a Hot Wheels track and watch them zoom. For racing, you can set up multiple karts side - by - side on the track and let the kids cheer them on. When it comes to stunts, try different track configurations to see what amazing moves the karts can make. Remember, these toys are not suitable for children under 36 months due to small parts. To keep the vehicles in good condition, store them in a dry place away from sharp objects. If they get dirty, you can gently wipe them with a soft cloth. You can also expand your collection by combining these 4 - packs with other Hot Wheels Mario Kart vehicles and playsets for even more fun.