Experiment kit to create crystals by dissolving in water. - Product Name: Exciting Crystal Experiment Kit - Ingredients: Urea - Target Age: 10 years and older - Precautions: Do not give to young children - Contents: Materials for crystal formation - Packaging Material: PET・PE - Instructions: Dissolve in water to create crystals Thank you for viewing. Only urea and laundry glue are included; the cardboard inside is not.