ALYX Authentication Service

Expert ALYX authentication by independent specialists. Consistent, reliable results with over 99.89% accuracy

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LegitGrails operates independently and is not associated with any brands it authenticates

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1017 ALYX 9SM, first called ALYX, was founded in 2015 by Matthew Williams with Luca Benini, and its rollercoaster belt, with a buckle modeled on a roller coaster harness, is its signature piece. Copies of that belt were reported on Amazon as early as 2018, so the buckle and its finish matter more than a printed strap that looks right.

Send photos of your ALYX belt or garment and a professional authenticator checks the buckle, its finish and engravings, the strap print and ends, the labels and the care tags against verified ALYX references.

Trusted by 100,000+ customers

It’s been a giant help preventing me from buying fake clothes!!

ALVARO M · 10/2026

My go to authenticator for Chrome hearts jewelry and Vetements hoodies.
They always deliver accurate results on time!

Cliff I · 09/2026

ALYX Authentication Service

Results in

$35
$25
$20
$15

Price

$15.00

Authentication certificate with final outcome

Receive a certificate with the final authentication result for your
ALYX item

Authentication certificate

How it works: start your authentication

Upload photos to Authenticate your item

Step 1

Upload photos

Begin by uploading images of your item

LegitGrails Team Authenticates your item

Step 2

We handle it

Our expert team reviews your item thoroughly

Receive your item Authentication Certificate

Step 3

Receive your certificate

You’ll receive the results via email, including a unique certificate of authenticity

What we check on ALYX

How to tell a real ALYX from a fake

These are the parts of an ALYX piece we check from your photos. On the rollercoaster belt, the buckle carries most of the check.

01

Rollercoaster buckle

Shape, finish, engravings and how the release mechanism looks closed and open.

02

Strap print

Font, spacing and edges of the printed text on the strap.

03

Strap ends

Metal tip, edge finishing and stitching.

04

Labels and tags

Brand label, care tags and their fonts on garments.

Authenticated. For Charity.

To celebrate ten years of British Red Cross second-hand fashion on eBay UK, pre-loved designer pieces will be auctioned, each one authenticated by LegitGrails

Authenticated For Charity
Authenticated For Charity
Authenticated For Charity

Featured questions

Have more questions? Visit our Help Center

How can I tell if an ALYX rollercoaster belt is real?

Photograph the buckle from the front, back and side, the buckle open, the full strap print and both strap ends. The strap print is easy to copy, so the buckle and its finish carry the check. A professional authenticator returns a verdict, Authentic or Fake.

Can you authenticate ALYX clothing, not only the belt?

Yes. We check ALYX and 1017 ALYX 9SM garments and accessories from your photos. Photograph the full piece, the brand label, every care tag and any buckle hardware from several angles, and an authenticator compares them with verified references.

Can you check an ALYX belt before I buy it on Grailed or eBay?

Yes. Ask the seller for the buckle photos listed above, closed and open, plus the strap print and both ends, and upload them before you pay. You get a verdict, Authentic or Fake, from a professional authenticator.

Which photos should I upload for authentication?

For the most accurate and quick authentication process, we advise you to upload clear photos of the areas visible when clicking 'Upload photos' on this page. We quickly determine if the uploaded photo meets our criteria. If your photos do not meet the criteria, you will receive a request for more and/or clearer photos. Check out Photo Instructions to find clear examples for each detail.

How long does LegitGrails authentication process take?

We provide a range of authentication response times to suit your needs, with options including 12 hours, 6 hours, 2 hours, and 30 minutes.

What happens if my item is deemed fake?

In the unfortunate event that your item is deemed counterfeit by LegitGrails, we will provide you with a comprehensive report of our findings and inform you of the result.

What if I have additional questions or concerns about the service?

If you have additional questions or concerns about the service, please feel free to contact our customer support team. We are available 24/7 to assist you with any inquiries, feedback, or issues you may encounter. You can reach us through our live chat on the website, our email support@legitgrails.com, or visit our Help Center. We will respond as soon as possible.

Recognized across the industry

Trusted by leading resale businesses and featured by global media

Rated “Excellent” and trusted
by 100,000+ satisfied customers

Rated 5 out of 5 on Trustpilot

Recommended for anyone who wants to be sure of the authenticity of their items, from clothes to perfumes. It's intuitive and quick to use.

Izolda T · 07/2026

Rated 5 out of 5 on Trustpilot

Seamless, reliable service. The process was efficient, communication was clear, and I got exactly what I needed without any hassle.

John S · 10/2026

Rated 5 out of 5 on Trustpilot

The process is easy to understand, good direction on what to include and fast results

Alexandra L · 10/2026

Rated 5 out of 5 on Trustpilot

I love how easy it is to submit an item for authentication, and they are super fast!

Kristin B · 10/2026

Rated 5 out of 5 on Trustpilot

Highly recommend! I always verify through them and have never been disappointed

Oshrat L · 10/2026

Rated 5 out of 5 on Trustpilot

The service is perfect and put my mind at rest. Trustworthy, quick and responsive.

Paula · 06/2026