Asics Authentication Service
Expert Asics authentication by independent specialists. Consistent, reliable results with over 99.89% accuracy
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Gel-Kayano and Gel-NYC retro runners now resell well enough to be copied in popular colorways. ASICS says it cannot verify purchased pairs, so an independent ASICS authentication is how you find out before you buy or sell. An authenticator checks the size label against the colorway, then the shape, stitching, insole, outsole and box label against verified references.
Trusted by 100,000+ customers
Very useful. Found a counterfeit pair of shoes I would have never figured out.
Chirag B · 05/2025
Seamless, reliable service. The process was efficient, communication was clear, and I got exactly what I needed without any hassle.
John S · 10/2026
Asics Authentication Service
Price
$4.00
Authentication certificate with final outcome
Receive a certificate with the final authentication result for your
Asics
item
How it works: start your authentication
Step 1
Upload photos
Begin by uploading images of your item
Step 2
We handle it
Our expert team reviews your item thoroughly
Step 3
Receive your certificate
You’ll receive the results via email, including a unique certificate of authenticity
What we check on ASICS
How to tell a real ASICS from a fake
On ASICS the size label is the first check: its style code has to match the model and colorway, and its print has to be clean. These are the photos we check on every pair.
01
Size label and style code
Style code and color code matching the colorway, and the print quality of the label.
02
Side profile
Panel shapes, the ASICS stripes and the overlays for the exact model.
03
GEL details
GEL windows and branding on the midsole, and the foam color.
04
Stitching
Even stitch density around the toe, heel and stripes.
05
Insole
Logo print and the finish of the insole.
06
Outsole
Tread pattern and moulded logos for the model.
07
Box label
Style code, color name and size matching the label inside the shoe.
Free Code Checker
Read your ASICS Style Code
On ASICS sneakers the model code, four digits, a letter and three digits, sits on the size label inside the tongue, and the box adds three digits for the color. Codes on the box and the shoe should match, but a correct code proves nothing alone, so ask our experts to authenticate the pair.
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
No. ASICS says in its scam notices that it cannot verify whether a purchased product is counterfeit, and we know of no official QR code or serial check on ASICS labels. That is what an independent authentication is for: send photos and we compare your pair with verified references for that model.
On the pairs we check, it is at the top of the size label inside the tongue and on the box label. The style code names the model and the colorway, so it has to match the box and the shoe, but counterfeiters print correct codes too. Our free style code check shows whether a code is built the way ASICS builds it. It is one checkpoint, not the verdict.
Yes. Ask the seller for the side profile, the size label inside the tongue, the box label, the GEL details on the midsole, the insole and the outsole. Upload them before you pay and we check the pair against references for that model and colorway.
Yes. Onitsuka Tiger is an ASICS brand, and pairs such as the Mexico 66 are checked on our Onitsuka Tiger page from the same kind of photos.
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.
We provide a range of authentication response times to suit your needs, with options including 12 hours, 6 hours, 2 hours, and 30 minutes.
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.
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.
