Hide & Seek Hydro-Dip Rock Painting Kit is a new twist on the popular trend of hydro-dipping! This child craft kit allows you to express yourself while creating a unique hydro-dip design safely and easily on river rocks. It’s water proof and perfect for hiding rocks outdoors. Spread kindness and happiness throughout your community by hiding rocks. Creativity for Kids craft kits feature non-toxic, kid-friendly materials for boys and girls.