Quartet Alphacolor Soft Square Pastels, Earth Tones, 12 Pastels per Set (145011) Non-toxic, soft and velvety smooth square pastels blend easily for an infinite range of tones Ideal for paper, cloth or ceramics Pastels deliver a rich pigmentation and dense consistency for superior quality and versatility Alphacolor pastels are AP-approved by Art and Creative Materials Institute 12 earth tone colors