size is the variant’s size as shown on your page, 1 to 100 characters, one value per product (small/medium/large only for a genuinely multi-size item, never a comma-separated list), required for Clothing and Shoes in free listings and in Shopping ads for Brazil, France, Germany, Japan, the United Kingdom and the United States, and for all products available in different sizes. Do not send n/a or multisize.
| Attribute | size |
|---|---|
| Requirement | Required for Apparel & Accessories > Clothing and Shoes in free listings, and in Shopping ads for Brazil, France, Germany, Japan, the United Kingdom and the United States, and for all products available in different sizes. |
| Format |
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Google’s rules for size
- Submit only the size value, without terms like n/a or multisize.
- One size per variant; each size is its own row.
- Country size systems and size types have their own attributes (size_system, size_type).
Common mistakes, and the error each one becomes
- Clothing variants without a size. → Missing value [color] / [size] / [gender] / [age_group]
- All sizes listed in one row separated by commas.
Where the value comes from on a connected store
| Shopify | The variant option named Size, Sizes, Mărime, Größe, Groesse, Grosse, Taille, Taglia, Talla, Velikost, Veľkosť or Méret, or with a name of two or more words whose last word is one of these, such as US Size or Shoe Size. A name with both a colour and a size word, such as Colour / Size, is not read. |
|---|---|
| WooCommerce | The attribute named Size, Sizes, Mărime, Größe, Groesse, Grosse, Taille, Taglia, Talla, Velikost, Veľkosť or Méret, or with a name of two or more words whose last word is one of these, such as US Size or Shoe Size: the variation’s own, else the product’s when it has one value. A name with both a colour and a size word, such as Colour / Size, is not read. |
The free feed check reads this attribute from any feed file and reports the defects above; every check is listed.
Questions merchants ask
What about one-size products?
Google wants only the size value; “one size” is a value shoppers understand, and for Meta it is explicitly acceptable.
Do I write “Size M” or “M”?
M. Only the value, as your page shows it.
Can shoes carry width?
Yes; Google’s page describes formats for shoes with width and trousers with inseam.
Sources
- Size [size] — Google Merchant Center Help
- Fixing Merchant Center disapprovals for product data quality violations — Google Merchant Center Help