Using these Hot Wheels Pull - Back Speeders is super easy. Just pull the car back on a flat surface and then let it go, and it will zoom forward. They're great for racing with friends or creating your own stories. When you're done playing, keep them in a dry place away from sharp objects to avoid scratches. Since they're die - cast, they're pretty durable, but don't expose them to extreme temperatures. And remember, each car is sold separately, so if you want a specific style, it's best to leave a note in your order or go to a local Toyworld store. These cars are suitable for kids aged 3 and up, so make sure younger kids use them under adult supervision.