Just sprinkle the powder into water and listen to it crackle pop & magically change colour! (can also be sprinkled into your Gelli Play or Slime Play) Children will have hours of fun watching and listening as the colours change and the powder crackles great for sensory play. This product is skin Safe drain safe easy clean and stain free ideal for any nursery play. Fully recyclable packaging and biodegradable crackle powder makes this very eco friendly!Mixed Colours - Yellow Blue & RedContains:10 x 20g Crackle Powder Sachets1 x Instruction leaflet