Core Topic

Sneaker Authentication Glossary

Why Terminology Matters

Understanding sneaker terminology is essential for navigating the resale market confidently. Misunderstanding terms like "unauthorized authentic" or "B-grade" can lead to costly mistakes. This glossary covers the key terms you'll encounter when buying, selling, or authenticating sneakers. Knowing the language is your first line of defense against the common authentication mistakes that cost buyers thousands of dollars each year.

Condition & Grading Terms

1. Deadstock (DS) — Brand new, never worn, in original packaging with all tags and accessories. The highest condition grade and most valuable state for resale.
2. VNDS (Very Near Deadstock) — Tried on or worn once indoors with no visible signs of wear. Typically sells for 85-95% of DS value.
3. PADS (Pass As Deadstock) — Lightly worn but could pass as unworn to most observers. Minor creasing or sole marks may be present.
4. B-Grade — Factory-second sneakers with minor manufacturing defects (glue stains, slight color variations). Authentic but not meeting the brand's quality standard for primary sale.
5. Sample — Pre-production sneakers made for testing or marketing purposes. Often differ from retail versions in materials or construction. Authentic but not intended for public sale.
6. PE (Player Exclusive) — Sneakers made exclusively for a specific athlete. Never released to the public and extremely rare. Authenticity verification is critical for PE purchases.

Authentication & Verification Terms

1. Legit Check (LC) — The process of verifying whether a sneaker is authentic or counterfeit. Can be done informally (community opinion) or professionally (KickCheck AI + expert review).
2. Authentication Certificate — A formal document confirming a sneaker has been verified as authentic. KickCheck certificates include a unique ID, QR code, and detailed checkpoint results.
3. Provenance — The documented history of a sneaker's origin, authentication events, and ownership transfers. See our full guide on <a href="/knowledge-base/sneaker-provenance-and-ownership-tracking">sneaker provenance</a>.
4. Chain of Custody — The unbroken record of who has possessed a sneaker from original purchase to current owner, verified through ownership transfers.
5. SKU (Stock Keeping Unit) — The unique product code assigned by the manufacturer that identifies the exact model, colorway, and release. Essential for authentication database matching.
6. Colorway — The specific color combination of a sneaker model. Each colorway has its own SKU and may have different resale values.

Counterfeit Classification Terms

1. Counterfeit / Fake — A sneaker produced without authorization that imitates an authentic product. Manufacturing, selling, or knowingly purchasing counterfeits is illegal.
2. Replica — Another term for counterfeit. Some sellers use "replica" to make fakes sound more acceptable, but replicas are still counterfeits.
3. Unauthorized Authentic (UA) — A misleading term used to describe counterfeits that allegedly come from the same factories as authentic pairs. There is no such thing as a legitimate "unauthorized authentic" — these are counterfeits.
4. Super Fake — High-quality counterfeits designed to be nearly indistinguishable from authentic pairs. These require professional or AI-powered authentication to detect.
5. Retro — A re-release of a sneaker that was originally produced in a previous year. Retros are authentic products from the brand, not counterfeits, though retros themselves are frequently counterfeited.