White, Yellow, Red, and Blue. Extremely lightweight and versatile, air drying modelling material. Once dry, the final model is guaranteed to retain a great deal of pliability and is strong and very light. Sharp knives, modelling tools and cutters can be used to enhance results. For larger models, build a modelling wire frame to provide support to your creations. Colours can be mixed to a marble or to create new colours. Non-toxic. Supplied in a reusable tub.