Thick, Japanese-made crayons, a set of 16 colors, compliant with ISO 11540. - Model Name: Zuko Crayons - Number of Colors: 16 - Made in: Japan - ISO Standard: ISO 11540 - Size: Thick Thank you for viewing. Although new and unopened, this is a pre-owned item stored at home. Please understand this before purchasing. Those who are sensitive to such matters, please refrain from purchasing.