This Crayola Air Dry Clay is a fine, natural earth clay which dries hard without the need for baking in an oven. You can use the clay to create permanent sculptures, figures and decorative items. add water to soften or help connect pieces. Being smooth and fine, the clay doesn’t stick to your hands and it dries hard on its own without the need for baking like normal clay. Dry artworks can be decorated with paint or varnish. This clay is white in colour and each tub is 2.25kg in weight.