Legitique Stone Island tools
Stone Island ART Number Checker
Decode your Stone Island ART number
Enter the ART number from your wash label or swing tag. The checker decodes the season, year, product range and garment type from the number itself.
What is a Stone Island ART number?
The ART number is the product code Stone Island has printed on garment wash labels and swing tags since the 1990s. It's built from several short codes stacked together: a season/year code, a product-range code, a garment-type digit, and a group of digits for the material, colour and dye process. A typical ART number looks like a string of 8–9 digits, sometimes with a single trailing letter, for example 581540223 or ART7112034.
It's a cataloguing system, not a certificate. A correct-looking ART number tells you what the piece is supposed to be — it needs to be checked alongside the Certilogo code (on Spring/Summer 2014-onward pieces), the compass badge, hardware, stitching and overall construction.
How to use this Stone Island checker
Type the digits from the wash label or swing tag exactly as printed, spaces are fine. The checker strips the "ART" prefix if present and decodes the season, year, product range and garment type from the number itself, using Stone Island's documented numbering pattern.
If a section of the code isn't in our public reference, the checker will say so rather than guess. For a full review, or if the number is missing, damaged, or the Certilogo won't authenticate, a professional Stone Island legit check is the safer next step. For other brands, start with the designer serial number checker hub.
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How to read a Stone Island ART number
Stone Island's ART numbers are built from stacked codes rather than one meaningless string. Using the confirmed example 581540223 (an authentic Membrana jacket), the positions break down like this:
| Position | What it represents | In 58-15-4-0223 |
|---|---|---|
| Digits 1–2 | Season and year code | "58" = Spring/Summer 2013 |
| Digits 3–4 | Product range / brand code | "15" = Stone Island mainline |
| Digit 5 | Garment type | "4" = jacket / outerwear |
| Remaining digits | Material, colour and dye batch | "0223" = internal fabric/colour reference |
| Trailing letter (optional) | Production batch / factory suffix | Not decodable — informational only |
Only the season/year cipher and a handful of range and garment-type codes are reliably documented in public. Beyond those, treat unlabelled digits as "not decodable" rather than trusting a guess — that's also how our checker above handles them.
Documented range and garment-type codes
These are the range and garment-type codes with a consistent public record. Anything outside this list isn't reliably documented, so don't treat an unfamiliar digit as automatically suspicious or automatically fine.
| Code | Position | Meaning |
|---|---|---|
| 13 | Digits 3–4 (range) | C.P. Company Under 16 |
| 14 | Digits 3–4 (range) | Stone Island Denims |
| 15 | Digits 3–4 (range) | Stone Island mainline |
| 16 | Digits 3–4 (range) | Stone Island Junior |
| 18 | Digits 3–4 (range) | C.P. Company, pre-FGF Industry ownership |
| 19 | Digits 3–4 (range) | Stone Island Shadow Project |
| 20 | Digits 3–4 (range) | C.P. Company Donna |
| 21 | Digits 3–4 (range) | World Wide Web |
| 25 | Digits 3–4 (range) | Stone Island Special / Limited Editions (collaborations) |
| 26* | Digits 3–4 (range) | Stone Island Serie 100 |
| 28* | Digits 3–4 (range) | Stone Island internal / employee use |
| 0 | Digit 5 (type) | Leather |
| 1 | Digit 5 (type) | Shirts |
| 2 | Digit 5 (type) | T-shirts |
| 3 | Digit 5 (type) | Trousers |
| 4 | Digit 5 (type) | Shoulder pieces / jackets |
| 5 | Digit 5 (type) | Knitwear |
| 6 | Digit 5 (type) | Sweatshirts |
| 7 | Digit 5 (type) | Long coats |
| 8 | Digit 5 (type) | Suit |
| 9 | Digit 5 (type) | Bags / hats / accessories |
| A | Digit 5 (type) | Jacket / blazer |
| B | Digit 5 (type) | Swimming trunks |
| G | Digit 5 (type) | Waistcoat |
| L | Digit 5 (type) | Bermuda shorts |
| M | Digit 5 (type) | Jacket |
| S | Digit 5 (type) | Shoes |
*26 and 28 are recognised category names in the wider reseller/collector reference community, but the exact digit-to-name pairing is less independently verified than the other rows here — treat a match on these two as a helpful pointer rather than a confirmed fact. A handful of further type codes (for compact fabrics, denim/cord, headwear and flock finishes, among others) are referenced by collectors too, but without a consistent enough public record to include with confidence.
Stone Island season & year code chart (1994–2026)
The first two digits step up by one every season and by two every year: even numbers are Spring/Summer, odd numbers are Autumn/Winter. This pattern is consistent across every publicly documented example we cross-checked, from 39 (Autumn/Winter 2003) through 70 (Spring/Summer 2019). From 2025 onward, Stone Island moved to alphanumeric season codes instead of continuing the two-digit sequence.
| Year | Spring/Summer code | Autumn/Winter code |
|---|---|---|
| 1994 | 20 | 21 |
| 1995 | 22 | 23 |
| 1996 | 24 | 25 |
| 1997 | 26 | 27 |
| 1998 | 28 | 29 |
| 1999 | 30 | 31 |
| 2000 | 32 | 33 |
| 2001 | 34 | 35 |
| 2002 | 36 | 37 |
| 2003 | 38 | 39 |
| 2004 | 40 | 41 |
| 2005 | 42 | 43 |
| 2006 | 44 | 45 |
| 2007 | 46 | 47 |
| 2008 | 48 | 49 |
| 2009 | 50 | 51 |
| 2010 | 52 | 53 |
| 2011 | 54 | 55 |
| 2012 | 56 | 57 |
| 2013 | 58 | 59 |
| 2014 | 60 | 61 |
| 2015 | 62 | 63 |
| 2016 | 64 | 65 |
| 2017 | 66 | 67 |
| 2018 | 68 | 69 |
| 2019 | 70 | 71 |
| 2020 | 72 | 73 |
| 2021 | 74 | 75 |
| 2022 | 76 | 77 |
| 2023 | 78 | 79 |
| 2024 | 80 | 81 |
| 2025 | K1 (alphanumeric) | |
| 2026 | L1 (alphanumeric) | |
Pieces from before 1994 may use older, less standardised label formats. Treat those, and any code outside this chart, as needing manual expert review rather than a definite pass or fail.
Where to find your Stone Island ART number
The ART number is printed on the wash label sewn inside the garment, usually near a side seam or the inner pocket, and it's also printed on the removable swing tag that comes with new pieces. On genuine items, the number on the wash label should always match the number on the swing tag.
Photograph both labels in good, even light. If you're missing one of them, or the two numbers don't match, that's worth flagging before you buy, sell, or authenticate.
Certilogo: Stone Island's separate authentication system
Since Spring/Summer 2014, most Stone Island garments (with some exceptions, like footwear and certain accessories) carry a second, separate code: a 12-digit Certilogo (CLG) code, usually paired with a QR code on a non-cotton label that resists the brand's own dye process. This is not decoded by the ART number checker above, because it's a live lookup against Stone Island's own database rather than a fixed cipher.
To use it, scan the QR code or enter the CLG code at certilogo.com, then answer the prompts about where and how you got the item. A genuine result should also match the garment type you actually have — Certilogo asks clarifying questions specifically to catch counterfeiters reusing one real code across a batch of fakes. A result can occasionally come back "Anomaly" rather than a clean pass or fail, and codes can in rare cases be reused, so treat Certilogo as one strong signal alongside the other checks rather than a single final answer.
Common signs of a fake ART number or label
A few patterns come up repeatedly on counterfeit Stone Island garments:
- ART numbers ending in "222." This specific ending shows up disproportionately on fakes. Some genuine soft shells legitimately end in a double "22," but a triple "222" is a strong warning sign, not a guarantee either way.
- Mismatched numbers. The ART number on the wash label should be identical to the one on the swing tag. Any mismatch is a reason to slow down.
- Missing Certilogo on post-2014 pieces. If a garment is styled like a Spring/Summer 2014-or-later release but has no CLG code or QR label at all, treat that as suspicious rather than assuming it was simply cut off.
- Misspelled fabric wording on vintage pieces. On some older jumbo cord overshirts, genuine wash labels use the German word for cotton correctly; counterfeits have been reported with it misspelled. Spelling errors anywhere on an official-looking label are a red flag in general.
- Rounded button stitch-holes. Genuine Stone Island buttons typically use triangular stitching holes; several counterfeits use round holes instead.
What to do after checking your ART number
If the ART number decodes cleanly, compare it against real listings or archive photos of the same code to confirm the model, colour and hardware match. If anything is unusual, missing, or contradictory, don't panic — some genuine pieces have replaced labels, repairs, or less common production details. Google or reverse-image-search the exact ART number and compare what comes back against your item.
Before buying, selling, or filing a dispute, get a professional Stone Island legit check with clear photos of the full garment, wash label, swing tag if present, Certilogo/QR label, compass badge, buttons, zippers, stitching and lining.
When to order a professional Stone Island authentication
Order an authentication when the price is high, the seller is unknown, there's no receipt, the ART number ends in 222 or doesn't match the swing tag, the Certilogo won't authenticate or returns "Anomaly," or you plan to use the result for a marketplace claim, chargeback, insurance file or resale listing.
Legitique's Stone Island authentication service checks the ART number together with the full garment: compass badge, buttons, zippers, fabric, dye finish, stitching, lining and model-specific construction details.