Crayola Modeling Clay is a versatile, non-hardening clay that is completely reusable. It stays soft even after molding, ensuring it can keep up with your child's imagination. It's designed with a wax and oil based formula, which makes it water-resistant. Plus, Crayola Clay is created with non-toxic materials so parents don't have to worry, it's a safe clay for kids, ages 4 & up. The natural clay colors included in this set are Black, Brown, Grey, and White. Let imaginations take shape with this reusable, non-drying clay in vibrant neon colors! It makes a great stocking stuffer and Easter basket filler!