Members of the platform have expressed outrage following a change that caused products showing incorrect sizing.
The popular resale platform has updated its size classifications for female and kids' apparel failing to inform all shoppers about the modification.
Digital Channels Backlash
Numerous buyers and vendors have taken to social media claiming that product pages now present a modified sizing category than originally posted due to the recalibration.
The company said the revised method more closely matches similar services.
They have suggested members to examine their items and manually change the size when needed, resulting in member annoyance.
Sizing System Modifications
Before the change, the measurements included numerical and alphabetical indicators, like S/8 or M/10.
The new system has a letter with a size spectrum like S/UK 8-10.
In some cases, the sizing has been recategorised - such as a large size used to be a 12 but is now a UK 16-18.
User Experiences
A fashion influencer, who creates plus-size fashion videos, said the change "makes both selling and buying harder".
"Not many brands say XL is a 20-22," as the platform currently indicates.
Another user, from Glasgow, explained products she uploaded with size 14 tags were appearing on the platform as larger sizing 20-22.
"If buyers measuring 20-22 acquire them they're going to be very disappointed," she said.
Manual Updates
A different user, from Derby, said she had been left angered due to the update requiring manual adjustment the sizing for "all her products".
"This situation is especially annoying, since I have chronic health issues and platform income has been essential following partial earnings loss," she explained.
Marketplace Information
The service features exceeding 100 million shoppers, comprising 18 million UK members.
It has become a favored option compared to resale services such as eBay and Depop.
This represents another occasion that an unexpected update to the app has proved unpopular: previously, Vinted reversed a change to its shipping options following member complaints.