Vinted users have been reacting angrily following a change that caused listings displaying inaccurate size information.
This online marketplace has updated its size classifications for women's and children's garments failing to inform all shoppers about the modification.
Countless users and merchants have taken to social media saying Vinted listings now show a modified sizing category compared to what was initially listed because of the remapping.
Vinted explained the updated approach better aligns with similar services.
They have suggested members to review their products and update the measurements by hand if necessary, resulting in member annoyance.
Earlier, the sizes had both numerical and alphabetical indicators, such as S/8 or M/10.
The updated approach includes a letter with a size spectrum such as S/UK 8-10.
With some products, the sizing has been recategorised - like an L measurement used to be a 12 but currently displays as UK 16-18.
Frankie Bridger, who produces content about larger sizing, explained the modification "makes transactions more difficult".
"Rarely do manufacturers list XL as sizes 20-22," as the platform currently indicates.
Another user, based in Glasgow, stated items she posted on Vinted with size 14 labels were appearing on the platform as size 20–22.
"If anyone [who is] size 20-22 buys them they're going to be very disappointed," she stated.
A different user, located in England, explained she became annoyed because the modification necessitated personal updates the measurements for "each individual item".
"Personally, this is quite irritating, because of my ongoing medical condition and platform income has been essential for me since losing part of my income," she said.
The app has more than 100 million users, with 18 million British users.
It has emerged as a preferred choice compared to resale services such as eBay and Depop.
This isn't the first time where an unanticipated change on the platform has faced criticism: previously, the platform withdrew an update to its shipping options after backlash from users.
Lena Voss is a tech journalist and digital strategist with a passion for uncovering emerging trends.