Between Sizes Decider
One sizing rule per product type, each backed by ten years of exchange data from the ledger.
One sizing rule per product type, each backed by ten years of exchange data from the ledger.
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Between Sizes Decider gives one rule per product as ruled rows, each backed by the exchange ledger rather than the design team: belts go up, Acme punches the extra hole free; gloves go down for bare hands, up for liners; the bag strap adjusts 40 cm and no exchange has ever been filed since the range was lengthened. The lede names the source of authority: ten years of exchanges, the ledger decided these.
Rules are one array with product, rule, and evidence per row. The evidence line is the credibility mechanism; a rule without a count is an opinion.
Reach for this block above the size chart on any product page where the item frequently exchanges for size reasons. A product earns a row here once its exchanges show a clear pattern; the footer paragraph states this explicitly.
A natural flow around it on an Ecommerce Pro page:
Before
After
One strong use is the full between sizes ledger. Other decider variants:
Tip: zero strap exchanges since 2019 is more persuasive than any copy about the adjustment range; the absence of exchanges is the review the product cannot give itself.