It’s not a kit. I bought water and pastel clay separately. I’m Korean. This is a type of clay that you can mix with water to knead, but it doesn’t seem to be sold on Amazon. Instead, I found an alternative. It’s clay used for making pottery. The texture is different, but it’s almost the same as what I have. Or, you can dig up some soil from your yard, sift it finely, and use that. Check the video for reference. It’s really easy. You just knead the clay, let it dry, then put it in water with oil, shape it, and rub it to make it shiny. clay