Amazon is standardising clothing sizes to improve the overall customer shopping experience through consistent and accurate data. Amazon has introduced new Clothing Size Standards , which set sizes based on industry standards. Previously, selling partners used free text to provide clothing sizing information. Going forward, this will be replaced with size attributes, such as body type and height type, which will only allow you to select values from a standardised list. Standardised size values will enable customers to view consistent sizes across clothing products, thereby providing an enhanced browse and search experience.
Amazon will roll out new clothing size attributes in waves across product types. We encourage all selling partners to begin familiarising themselves with the details outlined below and those included on our FAQ page.
After you select values for these two attributes, a specific set of values will populate for the attributes listed in the following section.
New Clothing size attributes
This table describes the new attributes that will be consistent across most marketplaces and product types.
|New attribute name||Requirement||Examples||Notes|
|Clothing Size System*||Required: Clothing Size System is used to display marketplace-specific Clothing sizes to customers on the site.||UK||Clothing Size System is associated with the selected marketplace.|
|Clothing Size Class||Required: Select the class of clothing size representation.||Age, Alpha, and Numeric||Numeric represents values such as 8, 10, 12 . Alpha represents values such as One Size, S, XL . Age represents values such as 6 Months, 2 Years .|
|Clothing Size Body Type||Conditionally mandatory: Select the applicable body type.||Regular, Plus||Values are dependent on product type and may not be required for specific products or age range descriptions.|
|Clothing Size Height Type||Conditionally mandatory: Select the applicable height type.||Petite, Regular, Short, Tall, Extra Tall||Values are dependent on product type and may not be required for specific products or age range descriptions.|
|Clothing Size Value||Required: Select the applicable clothing size.||40, S, 3XL, 6 Months, One Size||Values are dependent on Size Class selection. Only numeric values such as 8, 10, 12 are valid with the numeric Size Class.|
|Clothing Size To Value||Optional: If providing a range of sizes for a product, select the ending clothing size range value here. Valid selection here should be greater than Clothing Size Value.||42, M, 4XL, 12 Months||This value will be concatenated with Clothing Size Value selection to create a range to display to the customer.|
*The attribute name prefix for Clothing Size will depend on the product type, for example "Shirt Size" for Shirts," Bottoms Size" for Trousers, Shorts and Dungarees.
The detailed listing guidelines of valid sizes are available on our Clothing Size Standards.
Product type-specific size attributes
In addition to the attributes above, the following attributes will be available for certain product types.
|New attribute name||Applicable product types||Requirement||Examples||Notes|
|Waist Size Value||Trousers, Shorts, Dungarees, Skirt||Conditionally mandatory: Select the applicable waist size.||32W, 32W Short, 32W Long, 32W Extra Long, 32W / 34L||This field is mandatory when Size Class is equal to Waist or Waist Inseam.|
|Inseam Size Value||Trousers, Shorts, Dungarees||Conditionally mandatory: Select the applicable inseam size.||32W / 34L||This field is mandatory when Size Class is equal to Waist Inseam.|
|Neck Size||Shirt||Conditionally mandatory: Select the applicable neck size.||14.5, 15, 15.5||This field is mandatory when Size Class is equal to Neck or Neck Sleeve. An additional attribute will be available to provide a range of neck sizes for a product.|
|Sleeve Length Value||Shirt||Conditionally mandatory: Select the applicable sleeve size.||32, 33, 34||This field is mandatory when Size Class is equal to Neck Sleeve. An additional attribute will be available to provide a range of sleeve sizes for a product.|
|Shapewear Cup Size Value||Bra, Corset, Underwear Slips, Swimwear||Conditionally mandatory: Select the applicable cup size.||B, C, D||This field is mandatory when Size Class is equal to Cup Band. An additional attribute will be available to provide a range of cup sizes for a product.|
|Shapewear Band Size Value||Bra, Corset, Underwear Slips, Swimwear||Conditionally mandatory: Select the applicable band type.||28, 30, 32||This field is mandatory when Size Class is equal to Cup Band. An additional attribute will be available to provide a range of band sizes for a product.|
Size Attribute Logic Description
The table below describes how values can populate for each new attribute. Additional variations may occur subject to certain product types.
|Attribute Description||Attribute Requirement Definition|
|Clothing Size Class||Applicable values depend on Age Range Description selection:
For Trousers, Shorts, and Dungarees products, Clothing Size Class values will also include Waist and Waist Inseam.
For Shirt products, Clothing Size Class values will also include Neck and Neck Sleeve.
For Bras and other shapewear products, Clothing Size Class values will also include Cup Band.
|Clothing Size Body Type||Applicable values depend on Age Range Description, Target Gender, and Clothing Size Class selections:
Valid Clothing Size Body Type values will be Regular and Plus .
|Clothing Size Height Type||Applicable values depend on Target Gender selection, subject to product type:
|Clothing Size Value||Clothing Size Class selection will determine the applicable Alpha, Numeric or Age size values in this field for the given product.
If a product has a size range, select the value that represents the beginning of the range.
|Clothing Size To Range||Only values greater than selection for Clothing Size will be applicable here.|
Using the separate fields that exist for each of the individual clothing size attributes, they will be automatically combined into a customer-friendly format once the required sizing information has been designated. The combined attributes will be displayed on the detail page as in the examples below:
|Product Type||Target Gender||Age Range Description||Apparel Size Class||Apparel Size||Apparel Size to Range||Apparel Size Body Type||Apparel Height Type||Detail page size value (customer-facing)|
|Shirt||Female||Toddler||Age||2 Years||3 Years||Regular||Regular||2-3 Years|
|Hat||Unisex||Adult||Alpha||One Size||[blank]||N/A||N/A||One Size|
For certain clothing products, the new clothing size attributes will appear with different attribute-specific prefixes and include additional size attributes to accommodate the product type needs. For example, for the Shirt product type, Apparel Size Class will appear as Shirt Size Class and additional attributes like Neck Size Value and Sleeve Length Value will be available. Requirements for using these attributes will follow the same guidance under the Product-type specific attributes table above. The tables below illustrate how each product-type specific attribute will populate and result in the customer-facing size value.
Shirt-specific size examples
|Product Type||Target Gender||Age Range Description||Shirt Size Class||Shirt Size Value||Shirt Size to Range||Neck Size Value||Neck Size to Range||Sleeve Length Value||Sleeve Length to Range||Shirt Size Body Type||Shirt Height Type||Product Type|
|Shirt||Female||Adult||Numeric||14||[blank]||[blank]||[blank]||[blank]||[blank]||Plus||Short||14 Plus Short|
Trousers, Shorts and Dungarees-specific size examples
|Product Type||Target Gender||Age Range Description||Bottoms Size Class||Bottoms Size Value||Bottoms Size to Range||Waist Size Value||Inseam Size Value||Bottoms Body Type||Bottoms Height Type||Detail page size value (customer-facing)|
|Pants||Male||Adult||Waist Inseam||[blank]||[blank]||37||32||Regular||Regular||37W / 32L|
|Overalls||Female||Adult||Alpha||M||[blank]||[blank]||[blank]||Plus||Short||M Plus Short|
Swimwear, Bra, Corset and Underwear Slip-specific size examples
|Product Type||Target Gender||Age Range Description||Shapewear Size Class||Shapewear Size Value||Shapewear Size to Range||Cup Size Value||Band Size Value||Shapewear Body Type||Shapewear Height Type||Detail page size value (customer-facing)|
Skirt-specific size examples
|Product Type||Target Gender||Age Range Description||Skirt Size Class||Skirt Size Value||Skirt Size to Range||Waist Size Value||Skirt Body Type||Skirt Height Type||Detail page size value (customer-facing)|
Hat-specific size examples
|Product Type||Target Gender||Age Range Description||Headwear Size Class||Headwear Size Value||Headwear Size to Range||Detail page size value (customer-facing)|
|Hat||Male||Adult||Alpha||One Size||[blank]||One Size|
|Hat||Male||Adult||Numeric||7||7 1/8||7-7 1/8|
The links below provide a list of valid values for size_name in addition to the clothing size elements used to construct the valid size (each sheet containing valid values for different product types). Use the column labelled Compliant Size Value to view all size values that are considered valid. You can select a value in the Compliant Size Value column to see which Standardised Clothing Size Attributes were used to generate that valid value. You can also start from the Standardised Clothing Size Attributes columns, and moving from left to right, filter applicable values in each column to see the valid value that will be generated based on the elements you have selected.