The world's most popular soft pastels of unsurpassed glow, purity and intensity.Rembrandt® Pastels are made from the best quality, finely ground pure pigments in an extra-fine Kaolin clay binder. The result is a velvety-smooth softness in every color. Each rich color is thoroughly blended and uniform, end to end. Rembrandt® Pastels contain no hard bits or sharp edges which could cause shiny spots or scratches during application. Rembrandt® Pastels are hand-checked throughout production to ensure artists the consistency in texture, color and working qualities that they've come to depend on. Each round Rembrandt® Pastel stick has a transparent label and printed with information valuable to the artist: the color name and number, the number suffix indicating whether it is a pure tone (.5), a shade (.3), or a tint (.7, .8, .9), and the lightfastness rating. Light fastness is especially important when using pastels, since they"re practically pure pigment and very susceptible to light. About 70% of the Rembrandt® Pastel line has the highest possible degree of lightfastness.