Using this product is super easy. First, find the included cannister. You can fill it with either warm or cold water. Then, gently drop Batman and Mr Freeze figures into the water. Wait a bit and you'll see them change colors. This is a great activity for kids aged 3 and up to enjoy. When it comes to storage, keep the figures and the cannister in a dry place to avoid any damage. If the figures get dirty, you can use a soft, damp cloth to clean them. Just remember, each additional Imaginext DC Super Friends Color Changers set is sold separately, so availability might vary when you want to collect more.