This Mungyo oil pastel box set includes 72 vibrantly coloured non-toxic oil pastels. These pastels have exellent coverage to meet teachers needs.Supports: suitable for a wide variety of surfaces including canvas, wood and cardboard.Practical Information: Ages 3 years and over Nontoxic To protect drawing once completed use a drawing fixative When framing the work, it is recommended to slide small cardboard pieces between the paper and the glass so that the glass doesn't touch the pastel directly. Tips: To bland two colors side by side, use fingers or a piece of paper. Clean up:Water and soap.