Shoppers are voicing their frustration after an update resulted in products showing incorrect sizing.
The second-hand shopping app has updated its size classifications for female and kids' apparel but did not contact all users about the change.
Numerous buyers and vendors are posting online stating that platform listings now display a different size category versus the original listing due to the recalibration.
The platform stated the updated approach better aligns with comparable marketplaces.
The platform has recommended to check their listings and manually change the size where appropriate, causing user dissatisfaction.
Earlier, the sizing featured numerical and alphabetical indicators, such as S/8 or M/10.
The new system has an alphabetical indicator and numerical range for example S/UK 8-10.
For certain items, the measurements have been reclassified - like an L measurement was formerly size 12 but is now a UK 16-18.
One content creator, who creates plus-size fashion videos, explained the modification "makes transactions more difficult".
"Not many brands say XL is a 20-22," as the platform currently indicates.
A different member, located in Scotland, explained products she uploaded with size 14 tags were appearing on the platform as size 20–22.
"Should someone sized 20-22 purchase these they will likely be quite upset," she said.
Another shopper, located in England, stated she felt frustrated due to the update requiring manual adjustment the sizes on "every single listing".
"This situation is especially annoying, because of my ongoing medical condition and selling on Vinted has been paramount after experiencing income reduction," she stated.
The app has more than 100 million shoppers, with 18 million British users.
It has emerged as a preferred choice compared to resale services such as eBay and Depop.
This is not the initial instance that an unexpected update within the service has received backlash: previously, Vinted reversed a change regarding delivery choices after backlash from users.
Maya Chen is a blockchain developer and tech writer with over 8 years of experience in fintech innovation and decentralized systems.