How to Identify a Clothing Brand by the Tag
The tag is the single most informative square inch of any garment. Even when the brand name is faded, cut out, or unfamiliar, the tag still carries identifiers — registration numbers, country of origin, fabric content, and design details — that can name the maker. Here's what to look for, and how a single photo of the tag lets AI do the work for you.
What a care tag actually tells you
Beyond washing instructions, care tags list fiber content, country of manufacture, and — on garments sold in the U.S. — an RN or WPL number. The tag's language and legal boilerplate also narrow down the market it was made for, and the era: care symbol standards and required disclosures have changed over the decades, which helps date older pieces.
RN numbers: the built-in brand lookup
RN stands for Registered Identification Number — a number the U.S. Federal Trade Commission issues to companies that manufacture or sell textile products in the United States. Because RN numbers are issued sequentially and registered publicly, they identify the responsible company even when no brand name appears anywhere on the garment. The FTC keeps a free searchable database of them.
One caveat: the RN identifies the company, which isn't always the consumer-facing brand — big manufacturers produce for many labels. It's a strong lead, not always the final answer, which is where combining it with the garment's other details matters.
Tag design is a fingerprint
Typography, colors, weave quality, and logo styling on brand tags are distinctive and change in documented ways over time. Collectors date vintage Nike, Levi's, and Champion pieces almost entirely by tag design. Even for current clothing, tag shape and attachment style (woven vs. printed, side-seam vs. collar) are consistent within brands and help confirm an identification.
Let a photo do all of this at once
You can research a tag manually — search the RN, compare tag designs on collector forums, decode the union label. Or upload a clear photo of the tag (and one of the full garment) to StyleFinder, and the AI reads all of these signals together: the text, the numbers, the design, and the garment's construction. It returns the most likely brand with a confidence level in seconds. Your first three identifications are free.
Frequently Asked Questions
What is an RN number on a clothing tag?
It's a Registered Identification Number issued by the U.S. FTC to companies making or selling textile products in the U.S. It identifies the responsible company even when the brand name is missing or unreadable.
Can I look up a brand by RN number?
Yes — the FTC maintains a free public RN database. Or upload a photo of the tag to StyleFinder and the AI incorporates the RN along with the tag design and garment details for a fuller identification.
The tag is faded or partially unreadable — can AI still help?
Usually. The AI works with whatever is legible — partial text, tag shape, weave style, attachment placement — and combines it with the garment's construction details to reach an identification.
Is StyleFinder free?
Your first 3 identifications are free with no sign-up. Unlimited identifications are $4.99/month.