A tub containing 2 x 300g bars of each of the primary colours. Blended in different combinations, they produce many other colours. A fun way to learn about primary, secondary and tertiary colours. Instructions included. Wheat & Gluten free. This product will dry out when exposed to the air so keep in original packaging when not in use. Unless the product has been exposed to the air for 5 hours or more, the drying out process is reversible by wrapping in a damp cloth.