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INDUSTRY FIELD GUIDE

Shoe retailer pair, width and size-system records for AI

Two shoe boxes can show the same numeric size while using different size systems or widths.

By Fiund · Updated 2026-11-05

NAICS 458210 · Shoe Retailers

Two shoe boxes can show the same numeric size while using different size systems or widths. GS1 describes identification of trade items, including distinct variants. A retailer can make an original test of whether software keeps the complete variant attached to the pair. GS1 US product identifiers

Stage two generic pairs with original size and width cards. Place one prop from another pair inside the box and include a conversion table that applies to a different brand in the exercise. Ask which labels support a pair match and where conversion is unverified.

Use original props and no actual fit profiles, shopper images or retail orders. Keep fitting and product recommendations outside the dataset.

Describe a staged shoe pair verification sample

Original Fiund exercise

Identical size numerals can hide different systems, widths and pair IDs

Two original generic shoe pairs use invented sizing systems and dummy labels. No real fit profile, shopper, order or footwear recommendation appears.

Fictional records supplied to the evaluator
RecordSourceWhat it records
SPZ1Box A labelPair PA, size 8 in practice system SYS-A, width W1. Both props must carry PA under the original exercise rule.
SPZ2Observed pairLeft prop reads PA/8/SYS-A/W1. Right prop reads PB/8/SYS-B/W2. Numeral matches but pair, system and width differ.
SPZ3Conversion tableIllustrative SYS-B-to-SYS-A table applies to unrelated mock brand Z only. No authorized conversion or same-pair evidence for PA/PB.

Question for the model

Which prop matches Box A, and can the other prop be accepted from its size numeral or the unrelated conversion table?

Show the reference answer and checks

SPZ1 and SPZ2 match only the left PA prop to Box A's complete variant. The right PB prop shares numeral eight but differs in pair ID, sizing system and width. SPZ3's brand-Z table cannot establish a valid conversion for these props and would not resolve the pair-ID mismatch anyway. Preserve all variant fields and request the correct matching piece rather than infer actual fit or recommend footwear.

  • Matching size numerals across systems while dropping width and pair identity.
  • Applying a conversion table outside its brand scope or assuming conversion repairs a mixed pair.

Fields to preserve

Box and left/right pair ID
Defines pair integrity.
Size numeral, system and width
Separates size attributes.
Conversion scope and mismatched piece
Limits the match.

Test another case

Make the right prop match size system and width but retain PB. Require the pair mismatch to remain despite equivalent dimensions.

Use original props and labels. Exclude customer profiles and actual retail orders; no fit advice is given.

Download this fictional example and answer key (JSON)

Discuss a contribution

Describe the sources you control, the task they could support and what has already been checked. Use the existing-data assessment for an archive or the collection brief for a new recording project. The contributor agreement defines Fiund’s licensing authority and compensation. A guide or fictional exercise does not establish an accepted collection or a sale.

Primary sources and further reading