Sculpey Polyfoam Model Air Dry Clay, White, 1kg, 39030006

This clay is air-drying. It's lightweight, durable, and very easy to work with. It cures in approximately 24 hours.

(From Amazon.co.jp) Air-drying polymer clay Cures in 24 hours This clay is lightweight, durable, and very easy to work with. Once dry, it can be colored with acrylic paints. If you want to mix colors into the clay, use oil paints.