The Body

The minimum and maximum age in years for which a product is intended or suitable. It can be expressed as a single number, a numeric range (e.g., "6-8"), or an open-ended value such as "9+" indicating the lower bound only.

Indicates the physical or digital format in which a product is presented, such as "Hardback", "Paperback", "DVD", "Blu‑ray", "Vinyl", or other media types. The value may contain multiple comma‑separated items to represent combined attributes (e.g., "Hardback, Illustrated").

The vertical dimension of a product measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where height is relevant, including books, electronics, furniture and other objects.

The name of the entity that publishes or distributes the product. It typically refers to a publishing house, imprint, or brand responsible for producing and releasing the item.

A unique identifier assigned to books and other printed publications, typically consisting of 10 or 13 digits. It may include hyphens for readability but is treated as a string value. The ISBN uniquely identifies a specific edition of a title across the publishing industry.

A list of the natural languages in which a product is available or supported.

The linear measurement of a book’s spine from one edge to the other, expressed in units such as millimetres or inches. It indicates how thick the binding is and helps determine storage space, handling, and compatibility with shelving or protective covers.

The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.

The horizontal measurement of a product, expressed in a linear unit such as millimetres or inches. It indicates how wide the item is from one side to the other and is used for sizing, fitting, and compatibility purposes.