Extra Large Swell Polymer Heart

The heart is an amazing, hard - working organ! Simply put this polymer heart in water, and it'll expand many times its original size. Ideal for kids aged 8 and up.

Using this extra large expanding polymer heart is super easy. Just find a container of water and gently place the heart inside. It will start to grow and expand over time. As for the age, it's recommended for kids 8 and above. Make sure to use clean water to let the heart grow properly. After you're done playing, you can keep it in a dry place. Avoid exposing it to extreme heat or sharp objects as these can damage the polymer heart.