Guides · Streetwear
How to Tell if Your Corteiz Is Real or Fake (2026)
Corteiz (CRTZ RTW) is Clint419’s London brand, sold in drops through a password-gated website that sells out instantly. That means nearly all available stock lives on the resale market — and that’s exactly where the replicas are. The good news: fakes almost always fall apart on the tags and the logo — the woven Alcatraz neck tag and the exact island geometry are the hardest things to copy. This guide covers how to read Corteiz tags and labels, what to check in the graphics and fabric, the right angles to shoot, and how to check a piece from photos in about a minute.
Real vs fake Corteiz: comparison table
Data current as of July 2026. Replicas evolve, so judge by the combination of signs — never a single one.
| Sign | Authentic | Fake |
|---|---|---|
| Woven Alcatraz neck tag | A dense weave, an Alcatraz logo woven crisply enough to read up close, clean tag edges, and neat stitching around the whole perimeter. | A loose weave, a blurry design that “swims,” stray threads, and a tag sewn on crooked or rippling. |
| Tag generation vs release era | The tag type and design match the era of the specific drop — the piece lines up with documented references for its release. | A tag from “the wrong era”: the design doesn’t match the release references, or one tag type shows up on pieces from different years. |
| Alcatraz logo geometry | The island outline, the building detail, and the lettering match reference exactly: calibrated proportions and clean lines. | A distorted or simplified island silhouette, lost details, wrong font weight, and broken letter spacing. |
| Care and size labels | Clean, crisp printing, straight stitching, and a label set and format that match the release. | Smeared printing, coarse fonts, an arbitrary set of labels, and signs of re-stitching. |
| Graphics: RTW, stars, prints | An even application with clean edges, exact font and tracking, calibrated star geometry, and saturated color with no cracking. | Fuzzy outlines, crooked stars in mixed sizes, washed-out or oversaturated fills, and a print that cracks out of the box. |
| Fabric, seams and hardware | Dense heavyweight material that holds shape, even and dense seams, zippers and toggles that run true, and springy ribbing. | Thin loose fabric, wandering stitches, cheap hardware, and slack ribbing that stretches out fast. |
The difference is in the details — drag the slider
Typical differences in workmanship: stitching consistency, edge finishing, detail quality. Left — factory quality, right — common replica flaws.
Replica 
Authentic 1. Woven Alcatraz neck tag
Authentic: A dense weave, an Alcatraz logo woven crisply enough to read up close, clean tag edges, and neat stitching around the whole perimeter.
Fake: A loose weave, a blurry design that “swims,” stray threads, and a tag sewn on crooked or rippling.
2. Tag generation vs release era
Authentic: The tag type and design match the era of the specific drop — the piece lines up with documented references for its release.
Fake: A tag from “the wrong era”: the design doesn’t match the release references, or one tag type shows up on pieces from different years.
3. Alcatraz logo geometry
Authentic: The island outline, the building detail, and the lettering match reference exactly: calibrated proportions and clean lines.
Fake: A distorted or simplified island silhouette, lost details, wrong font weight, and broken letter spacing.
4. Care and size labels
Authentic: Clean, crisp printing, straight stitching, and a label set and format that match the release.
Fake: Smeared printing, coarse fonts, an arbitrary set of labels, and signs of re-stitching.
5. Graphics: RTW, stars, prints
Authentic: An even application with clean edges, exact font and tracking, calibrated star geometry, and saturated color with no cracking.
Fake: Fuzzy outlines, crooked stars in mixed sizes, washed-out or oversaturated fills, and a print that cracks out of the box.
6. Fabric, seams and hardware
Authentic: Dense heavyweight material that holds shape, even and dense seams, zippers and toggles that run true, and springy ribbing.
Fake: Thin loose fabric, wandering stitches, cheap hardware, and slack ribbing that stretches out fast.
Popular Corteiz models
Model-by-model checks — what to look at on each:
Where to inspect
The key zones to photograph and check on this type of item — a schematic, not a product photo.
- 1Neck label and tags
- 2Print and its printing
- 3Stitching and hem
- 4Shoulder and sleeve seam
- 5Fabric and weight
How to photograph your Corteiz for a check
Shoot in daylight, avoid glare, keep focus sharp. You need 5 angles:
- 1 Full item (front)
- 2 Alcatraz logo close-up
- 3 Woven neck tag
- 4 Care and size labels
- 5 Seams, cuffs and hardware
How to read the result
The AI returns a verdict with a confidence score:
- 75–100% — Authentic: high confidence the item is genuine.
- 60–74% — Likely authentic: probably genuine with minor concerns.
- 40–59% — Uncertain: the photos are not conclusive — retake or add angles.
- 25–39% — Likely fake: several red flags.
- 0–24% — Fake: clear signs of a replica.
Check your Corteiz right now
Snap photos of your item and get an AI verdict with a confidence score in about a minute.
FAQ
How do I check if a Corteiz tag is real or fake?
Look at three things: the sharpness of the woven Alcatraz logo (on the original the design reads up close, on a fake it “swims”), the weave density, and straight stitching on every edge. Then match the tag type against documented references for the specific release — designs changed between drops, and a tag from the wrong era exposes a replica even when it’s neatly made.
Do all Corteiz tags look the same?
No. The neck tags and sewn-in labels have changed between releases, so there is no single “reference tag” — there’s the correct tag for a specific drop. Don’t compare a piece against a random internet photo: find documented references for the exact release your piece belongs to.
Why is there so much fake Corteiz on resale?
Corteiz sells in drops through its own password-gated website, runs sell out instantly, and there’s no official off-the-shelf retail. Nearly all available stock is resale, where nobody vets the seller. Replicas exploit the scarcity: a piece that’s suspiciously available “in every size” below market price is a red flag on its own.
How accurate is checking Corteiz from photos with AI?
Accuracy depends on the quality and number of photos. LegitCheck AI cross-references the tells across every angle — the tag, the Alcatraz logo, the graphics, the seams — and returns a verdict with a confidence score, honestly flagging “uncertain” when the photos don’t allow a clear call. It’s a fast screen, not a legally binding appraisal.