Members of the platform have expressed outrage after an update resulted in listings displaying inaccurate size information.
The second-hand shopping app has altered its measurement guidelines for women's and children's garments without notifying every member regarding the update.
Online Platforms Reaction
Numerous buyers and vendors are posting online claiming that product pages now present an altered size classification than originally posted because of the remapping.
The company said the updated approach better aligns with comparable marketplaces.
It has advised users to review their products and adjust the sizing manually when needed, causing user dissatisfaction.
Sizing System Modifications
Before the change, the sizing featured a single numeric size and a letter, such as S/8 or M/10.
The revised method features a letter with a size spectrum for example S/UK 8-10.
In some cases, the sizing has been recategorised - for example a size L was formerly size 12 but currently displays as UK 16-18.
User Stories
Frankie Bridger, who produces content about larger sizing, explained the modification "makes transactions more difficult".
"Rarely do manufacturers list XL as sizes 20-22," which is what Vinted now does.
A different member, from Glasgow, stated items she posted on Vinted with size 14 labels were appearing on the platform as measurements 20-22.
"If anyone [who is] size 20-22 buys them they will likely be quite upset," she said.
Manual Updates
A different user, from Derby, stated she felt frustrated because the modification necessitated personal updates the sizes on "every single listing".
"This situation is especially annoying, since I have chronic health issues and platform income has been essential after experiencing income reduction," she explained.
Platform Context
The app has more than 100 million members, comprising 18 million UK members.
It has emerged as a preferred choice compared to resale services such as eBay and Depop.
This represents another occasion where an unanticipated change on the platform has faced criticism: previously, Vinted reversed a change to its shipping options due to shopper criticism.
