Stone Clay Modeling Clay 石塑粘土 (500g) is a fine and even self-hardening modelling clay, suitable for a wide range of art and craft projects.
No baking is required – it simply dries when you leave it out to air.Drying time is roughly 24 hours per cm of thickness.
It's a very malleable clay and is easy to smooth.
HOW TO KEEP
The very best way to keep your clay from drying out is to store it in tightly sealed containers. use heavy duty zip lock bags and had much success with that simple method. Whatever container you use, you want to be able to keep the moisture level of the clay at the same place as when you first got your clay.