China just named Mammut for selling a RMB 1,448 “sunscreen” jacket that failed its UV test
Somebody at the China Consumer Association opened Mammut's official Tmall store and bought a women's jacket for 1,448 yuan.
They paid full price and waited for the courier, like any Chinese shopper buying a Swiss jacket in June.
Then they took it to a lab.
The number
Chinese national standard GB/T 18830-2009 sets the bar for anything sold as 防紫外线产品, an anti-UV product. UPF above 40, and average UVA transmittance below 5%.
The Mammut jacket measured 6.45%.
So they washed it. Three times, then measured again: 6.24%. Five times: 6.21%. Eight times: 5.87%.
Sit with that sequence for a moment, because it closes the escape route. When a sun-protection garment fails after wear, the usual explanation is that a finish washed out. This one moved the other way. Eight cycles in a machine and it crept toward the line without ever crossing it, which means it was outside the standard on the day it shipped.
A Swiss brand founded in 1862, sold through its own Chinese flagship at a premium price, and the fabric was never compliant.
Now the part that makes it worse
The CCA tested 20 jackets. It bought them all the same way, from e-commerce platforms and offline malls, at prices running from 124 yuan to 1,540 yuan.
Nineteen passed.
Salomon passed. The North Face passed. ASICS passed. mont-bell passed. Somewhere in that sample sits a 124-yuan jacket that did exactly what it said on the label.
One sample failed the UV requirement, and it was near the top of the price range.
Every Chinese consumer reading that coverage drew the obvious conclusion, and it is the conclusion that should keep Western brand teams awake. The expensive imported one was the one that didn't work.
The detail nobody has picked up
Buried in the same report is a finding that should worry more brands than the failure itself.
The CCA noted that some brands advertised UV protection clearly on their e-commerce product pages, and the physical garments that arrived carried no sun-protection claim on the hangtag at all. No UPF value printed anywhere.
The website promised. The label said nothing.
The gap sits between the people writing your product listings and the people specifying your labels, and in China it is the kind of gap a regulator finds and writes down. It also costs almost nothing to close, which makes it the single cheapest risk on this list.
Two samples, one Mammut and one Jack Wolfskin, were separately flagged for mixing old and new care-symbol standards on their labels. Mundane, unglamorous, and precisely the sort of thing that turns a clean test result into a mention in a national report.
Then Mammut answered
The brand's response, once the report ran: the company takes the matter seriously and has launched a further in-depth investigation.
Chinese commentary was not impressed, and it is worth understanding exactly why rather than putting it down to a hostile audience.
The CCA published a number. Several numbers, across four wash conditions, against a named national standard. Mammut answered with a sentence containing no numbers, no methodology, no date and no commitment about the production run sitting in warehouses.
When a regulator gives the public arithmetic and the brand gives the public adjectives, the public believes the arithmetic.
Why a CCA test is not a bad review
Western executives tend to file consumer-association testing under public relations. In China it belongs closer to regulation.
The CCA's comparative tests get carried across Chinese business media within days. This one ran in 21世纪经济报道, 新浪财经, 北京商报, 观察者网 and 南方都市报 inside a week of publication.
And look at how the test is constructed, because the design is what removes your ability to argue. Ordinary retail purchases at real prices. The Chinese national standard for the category. Testing before and after repeated washing. Then publication of the raw figures.
There is no laboratory condition to dispute and no corner case to plead. Somebody bought your product from your own shop and measured it.
Which brings up the assumption underneath this whole episode. A garment can hold a perfectly valid European certification and still sit outside the Chinese line, because GB/T 18830-2009 sets its own threshold and its own method. The same is true across every function Chinese consumers buy on. Waterproofing has its standard, insulation has its standard, antimicrobial treatment has its standard, and next-to-skin garments carry an additional safety class.
Your European certificate stops working at the Chinese border.
Five things to do about it
1. Only print a promise you would bet money on.
Nobody can prove a handbag is ugly. Anybody can prove a jacket lets sunlight through.
The moment you print 防晒, 防水, 防风 or 保暖 on a Chinese label, you have handed a tester the exact question to ask, and the answer becomes public. So go through your China range and find the products where the claim is borderline. For those, drop the claim and sell the garment on something else, because a lightweight jacket that says nothing about UV cannot fail a UV test.
You keep the sale. You remove the risk. It costs you a line of copy.
2. Buy your own products from your own shop, and test them.
Mammut never sent the CCA a sample. Somebody bought the jacket at full price from Mammut's Tmall store, which means every careful process you have for approving samples did nothing here.
The fix takes one person and about two weeks. Buy ten of your function-labelled China SKUs from your own flagship, send them to a Chinese lab, test against the standard that applies (GB/T 18830-2009 for UV, GB/T 4744 for waterproofing, GB/T 20944 for antimicrobial, GB/T 11048 for insulation), and make sure next-to-skin garments meet GB 18401 class B.
It costs less than a day of agency fees and tells you whether you are the next headline.
3. Check your product page and your hangtag say the same thing.
The CCA found brands promising UV protection in their online listings while the garment turned up with no claim printed on the label and no UPF number anywhere.
That is your e-commerce team and your product team working from different documents. Have someone open your top 20 Chinese listings on one screen and hold the physical hangtag in the other hand. Anything the website claims must appear on the tag, with a number.
One afternoon. No budget. It removes an entire category of regulatory finding.
4. Write your response now, and put numbers in it.
Mammut said it takes the matter seriously and has started an investigation. Chinese readers dismissed it, and the reason is simple: the regulator published figures and the brand replied with adjectives.
Draft the template today, while nobody is shouting. It needs four things: which independent lab you have appointed, which standard they are testing to, the date you will publish the result, and what happens to stock already in the warehouse.
Get legal to approve it now. The version written during a crisis is always the vague one.
5. If you passed, say so. Loudly.
Nineteen brands just got tested by China's state consumer body and passed. They have earned a free, nationally published endorsement, and almost none of them will do anything with it.
Put it on the product page: tested by the China Consumer Association, August 2026, compliant with GB/T 18830-2009. A cautious Chinese shopper trusts that line more than any influencer you could pay.
Passing is the expensive part. Saying you passed is free, and nearly everybody forgets.
