Holbein Irodori Artist Gouache is a series of premium opaque watercolors offering outstanding handling and excellent ratings for lightfastness. Each color in the series draws inspiration from both history and nature, allowing artists to experience the rich beauty and delicate expression of Japan in the spring, summer, autumn, and winter. Conforms to ASTM-D4236. - Holbein Irodori Artist Gouache - Set of 12, Summer, 15 ml TubesHolbein Artist Gouache, IRODOR SMMR 15ML 12S - Includes 12, 15 ml (0.5 oz) tubes of White, Black, Edo Violet, Oriental Blue, Ultramarine, Bamboo Green, Evergreen, Spring Green, Taisha Brown, Canola Yellow, Orange Yellow, and Scarlet.