Modeling Material Clay. Non-toxic. Ready to use and Fun!. Material is non-toxic, odorless, environmentally safe, non-greasy.The main raw material is paper fiber, health, environmental protection. Making super light clay can improve children's practical ability,observation ability,creative ability,logical capability and ability of thinking. Very soft, smooth, non-sticky. Does not stick to your hands, super stretchy, when it dries and hardens clay stays lightweight. clay is easy to shape, bend and stretch. The kit comes with 5 colors that are easily blendable to give you lots of color possibilities.