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This article applies to selling in: United Kingdom

Clothing Size Standards

Standardization of clothing sizes is part of a larger initiative to improve the overall shopping experience via incorporation of consistent and accurate data. In 2020 (2H20), Amazon is introducing a new set of attributes specific to clothing sizes that will be used to display standardized and consistent size values to on-site customers.

We highly encourage all sellers to begin adopting the new standards and to proactively update clothing sizes that do not conform to future requirements. In addition, we recommend that sellers spend time reviewing the standards outlined below and the Frequently Asked Questions. To ensure that your clothing sizes are displayed properly on the website, we ask that you include the following information for each clothing size that you submit.

The following tables provide detail about the compliant size values for clothing products.

Important: Syntax and letter case must be exactly as described in the examples below.

Clothing Sizes

Size Type Description Example of Compliant Sizes
Numeric Only numeric* values without locale suffix are allowed. 10, 12, 14
Numeric Range Numeric* value ranges specify from and to range value for the size. Range values are displayed with a hyphen and without spaces. 10-12, 12-14

Alphabetical** representation of size values.

Examples of non-compliant sizes for UK: XXX-Small, 3x-small, 3X-Small

4XS, 3XS, XXS, XS, S, M, L, XL, XXL, 3XL, 4XL, 5XL
Alpha Range

Both from and to range values for alphabetical** sizes must be in the same format. Range values are displayed with a hyphen and without spaces.

Examples of non-compliant sizes for UK: Small - Large

Age Age type size values are supported for kids, toddlers and infants. Provide kid’s age in months or in years. Valid months values are limited to:

0, 3, 6, 9, 12, 15, 18, 24

Valid years values are limited to:

1, 2, 3, …, 17, 18

3 Months, 12 Months, 5 Year
Age Range Both from and to sizes for age ranges must be in the same format. The suffix of Months or Years is applied only once at the end of the range. Range values are displayed with a hyphen and without spaces. 9-12 Months, 5-6 Years
Kid’s height in cm

Provide height (number) without cm.

Examples of non-compliant sizes for UK:

92 cm, 36 inch
92, 98, 104, 110, 116, 122, 128, 134, 140, 146
Body Type Suffixes

Additional body type suffixes can be provided with alpha and numeric sizes and related ranges. Append the suffix to the size with a space in between.

Valid Body Type suffixes for UK are limited to:

Plus, Petite, Tall, Extra Tall, Short, Extra Short, Long, Extra Long
14 Plus, XL Tall

*Numeric sizes across EU locales vary, e.g. 40 in IT is not the same as 40 in DE marketplace.

**Alpha sizes vary across regions, e.g. XL in EU is not the same as XL in Asia.

Product Type Specific Sizes

Size Type Description Example of Compliant Sizes
Trousers and Shorts You may use waist size only or waist size and inseam length. 32W, 32W Short, 32W Long, 32W Extra Long, 32W / 34L

You may use band size and cup size.

Valid cup sizes for UK:

AA, A, B, C, D, DD, E, F, FF, G, GG, H, HH, J, J, K
34B, 38C, 40E
Shirts You may use collar size or collar size ranges. 16, 16.5, 17, 16.5-17
Socks You may use footwear sizes or footwear size ranges. 6, 7, 6-8
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