Using your Goo Mobiles is super easy. Just take them out of the pack and start stretching them. You can pull them to up to 3 times their size to see their amazing elasticity. Then, smash them together and watch them change shape. It's a lot of fun! When playing, make sure to do it on a clean and open area so you don't lose any parts. Also, don't stretch them too forcefully in one direction as it might damage the toy. To keep your Goo Mobiles in good condition, avoid exposing them to sharp objects and extreme temperatures. If they get dirty, you can gently wash them with mild soap and water and let them dry completely before playing again.