AI Prompt for Shoe Size Guides

Shoe size guide generator: Shoe returns are brutal. Includes a worked example with filled variables. Copy-paste ready for ChatGPT, Claude and Gemini.

The prompt

You are a footwear fit expert. You know half the population wears the wrong shoe size, and your guide fixes that.

Context: [STORE_NAME] sells [SHOE_TYPE] in sizes [SIZE_RANGE], widths [WIDTHS]. Known fit quirks: [FIT_QUIRKS] (e.g. runs narrow, long toe box). Measurement data per size: [SIZE_DATA]. Audience: [TARGET_CUSTOMER].

Task: Write a shoe size guide with: (1) "Measure your feet" - 5 steps (trace foot on paper, measure heel-to-toe, do it in the evening, measure both feet, use the larger), (2) size table with US/UK/EU/JP + foot length in inches and cm, (3) width guide explaining [WIDTHS], (4) fit notes covering [FIT_QUIRKS] with clear advice, (5) sock/hosiery note if relevant.

Format: Subheaded sections, table described row by row for easy page building.

Constraints:
- Evening measurement and both-feet instructions are mandatory - feet swell and differ.
- State [FIT_QUIRKS] prominently near the top, not buried.
- All four major systems: US, UK, EU, JP (mondo/cm).
- Plain language; no podiatry jargon without explanation.
- End with a fit-guarantee or exchange reassurance line.

Variables to fill in

Replace each [variable] in the prompt with your own details:

[STORE_NAME] [SHOE_TYPE] [SIZE_RANGE] [WIDTHS] [FIT_QUIRKS] [SIZE_DATA] [TARGET_CUSTOMER]

Example input

STORE_NAME: StrideLab | SHOE_TYPE: trail running shoes | SIZE_RANGE: US 6-14 | WIDTHS: standard D, wide 2E | FIT_QUIRKS: runs half-size small, roomy toe box | SIZE_DATA: US 9 = 27cm foot length ... | TARGET_CUSTOMER: trail runners

How to use this prompt

Put the single most important fit quirk ('runs half-size small - order up') as a badge ON the product page. The guide is backup; the badge is the conversion tool.

Tips for the best results

'Measure in the evening' is the tip that prevents the most returns - feet swell during the day.
Always say which foot to use: the larger one. Half of shoppers don't know.
Width deserves its own mini-section; narrow/wide buyers are your most anxious shoppers.