How to list sizes on eBay

Available standard size values vary by category, eBay site, and, for the US, size type. The supported standardized sizes are the values shown in the size dropdown when creating or revising a listing.

For sellers using the API

If you list through an API or third-party tool, use these steps to find the size values eBay accepts for your category.

1. Find the correct leaf category for your item, because supported size values depend on the category.
2. Call getItemAspectsForCategory for that leaf category to retrieve the supported item specifics.
3. In the response, find the Size aspect and use its returned values as the accepted standard sizes. 
   1. If a size value is not returned for that category, do not send it in your listing request.
   2. If both Size Type and Size are mandatory, send only a valid Size Type and Size combination and do not send only one half of the pair.
4. Build your listing payload using only the supported standard values returned by the API and avoid custom or made-up size values.
   1. If the exact tagged or branded size is not available, choose the closest supported size and add extra sizing detail in the title, description, measurements, or optional item specifics.

For questions specific to your third-party tool or integration, work directly with your third-party provider.

Important for API sellers: You may see Taxonomy API metadata that describes Size as FREE_TEXT. This does not mean that any size value can be used when listing. Use the standardized values returned by the API or shown in the listing-flow Size dropdown as the source of truth.

eBay may standardize a common size

When possible, eBay may change a common size value to its supported equivalent—for example, “Medium” may become “M.” Review your listing to make sure the size still represents your item. Select a different supported size if needed.

You may need to update the listing

If eBay cannot confidently match the size to a supported value, the listing may not be visible to buyers until the size is updated. To make the listing visible to buyers again, revise the listing and select the supported size that best represents your item.

Sellers will be notified by email if a listing is hidden from buyers. They can also visit the Issue Resolution Center in Seller Hub to view any outstanding policy issues, understand which listings are affected, and see the steps needed to resolve them. Good ‘Til Cancelled listings remain hidden from search until you select a supported size.

If eBay can’t confidently match the size to a supported value, your listing may be hidden from buyers. To make it visible again, revise the listing and select the supported size that best represents your item. 

Some brand-specific, niche, or infrequently used sizes may not have an exact standardized equivalent. Select the standardized size that best represents your item, then use your title, description, optional item specifics, photos, or measurements to provide additional sizing details.

Yes. The standardized size helps buyers find and compare your item using eBay’s shopping filters. You can still include the item’s original, tagged, or manufacturer-specific size elsewhere in your listing when it provides useful additional context.

For listings with multiple size variations, use the appropriate standardized size for each variation. Additional sizing information can be included elsewhere in the listing when needed.

If you list through an API or third-party tool, use these steps to find the size values eBay accepts for your category.

1. Find the correct leaf category for your item, because supported size values depend on the category.
2. Call getItemAspectsForCategory for that leaf category to retrieve the supported item specifics.
3. In the response, find the Size aspect and use its returned values as the accepted standard sizes.
4. If a size value is not returned for that category, do not send it in your listing request.
5. If both Size Type and Size are mandatory, send only a valid Size Type and Size combination and do not send only one half of the pair.
6. Build your listing payload using only the supported standard values returned by the API and avoid custom or made-up size values.
7. If the exact tagged or branded size is not available, choose the closest supported size and add extra sizing detail in the title, description, measurements, or optional item specifics.

Important for API sellers: You may see Taxonomy API metadata that describes Size as FREE_TEXT. This does not mean that any size value can be used when listing. Use the standardized values returned by the API or shown in the listing-flow Size dropdown as the source of truth.

Review the available standardized sizes and select the value that best represents your item. You can use your title, description, measurements, photos, or applicable item specifics to provide any additional sizing context.

For existing apparel and footwear listings covered by this update, eBay checks only the required Size field. If that field contains a supported size, information in additional fields—such as EU Size or UK Size—won’t affect the size check or cause your listing to be hidden for this reason.

Before August 26, eBay is updating existing listings when a size can be confidently changed to a supported value—for example, “Lg” to “L.” A final update is planned shortly before enforcement begins to catch as many eligible listings as possible.

After August 26, eBay may still automatically update some simple, recognizable size values on new listing requests—for example, “Small” to “S.” However, this will be limited, so you should not rely on every size being updated automatically. When creating or revising a listing, select the supported size that best represents your item.

Available standard size values vary by category, eBay site, and, for the US, size type. The supported standardized sizes are the values shown in the size dropdown when creating or revising a listing.

Choose the supported size that best represents your item, then add any fit, label-size, regional-size, or measurement details buyers may need.

• Shirts and tops: Select the closest supported size. Note if the item runs large, has a slim fit, or is oversized.
• Jeans and pants: Use the supported waist size where available, and add the inseam measurement.
• Dresses: Choose the closest supported dress size. Add bust, waist, and length measurements when fit may vary.
• Jackets and coats: Select the closest supported size and describe the fit, such as tailored, relaxed, or oversized.
• Shoes: Select the appropriate supported regional size, such as US, UK, or EU. Add the size shown on the shoe when helpful.
• Bras: Use the supported band-and-cup size where available. Add the label or brand-specific size when needed.
• Children’s clothing: Select the closest supported age or size. Add age, height, or weight guidance when relevant.

Include additional details in the description or applicable optional item specifics.