Distinguish different problems
A shopper unable to select an in-stock size faces a different problem from one who does not understand the fit. A popular size being sold out is different again. Do not label all three situations as a size-guide problem.
Review the interface state, variant data and relevant behaviour observations together. Note the specific device and product context so the proposed action addresses the observed issue.
Use accurate guidance
Fit advice should reflect the actual item and the information the brand can support. A size chart needs a clear unit and a meaningful explanation of what is being measured. Avoid treating generic model imagery as a substitute for missing product information.
When using behaviour data, follow the account’s approved access and masking setup. Look for a repeated pattern in the relevant segment rather than selecting a single dramatic recording as proof.
Define the change and guardrails
A proposal might improve access to verified size information, clarify a selection state or make stock status easier to understand. State why that change is expected to help the identified group.
Evaluate completed purchases alongside appropriate downstream context. A higher add-to-cart rate does not settle whether shoppers chose the right size or kept the order after delivery. The review should fit the product and return cycle.
A focused mobile hypothesis
The team observes that mobile visitors repeatedly open and close the selector without finding the size guidance. It proposes a clearer link beside the selector, using verified information. It evaluates the purchasing outcome and checks relevant downstream returns data where available.
Turn the guide into a useful review
- Separate usability, information and stock issues.
- Verify the item’s measurements and fit statements.
- Define the affected devices and products.
- Include a suitable downstream quality measure.
Bring the question.
Keep the context.
Map the relevant sources and specialist workflow for your team.
Explore your stack
