Rich in pigment, smooth in texture, these quality square artists pastels will delight you with their smooth velvet effect. These are made of pure calcium carbonate and have 30% more material by weight than other leading brands. Softer than a pencil or art chalk, more blendable than an oil pastel. Use on paper with some "tooth" like construction paper. Work with these directly on paper or cloth or use a brush to transfer color from stick to plastercraft or ceramics. Nontoxic.