National Autistic Society Approved Gelli Play, turns water into up to 4 Litres of thick colourful goo! Sprinkle the Gelli Play powder into a bowl of water and watch it magically transform into colourful goo! When you’re finished playing, simply add more water and dispose of down the toilet. Gelli Play is the perfect product for messy and multi-sensory play! Foil Bags - 20g 1 x Foil Bag makes up to 4 litres of Gelli Mixed colours Red and Green 12 IN A RETAIL BOX OR OPTIONAL 12 COUNT CDU Skin Safe - Drain Safe - Easy Clean - Stain Free- UK Made Our powder is certified biodegradable!