What this page covers
Decision quality, rollout metrics, and category-specific return drivers.
Who it is for
Ecommerce operators planning or auditing fit-guidance programs.
Last reviewed
March 24, 2026.
Start with the return reason
Before deploying tooling, separate size, style, quality, and logistics causes. Fit guidance mainly addresses only part of the problem.
Pilot narrowly
Use one category or brand first so the team can compare exposed and unexposed orders cleanly.
Measure after purchase too
Add-to-cart and conversion matter, but the real test is whether the recommendation lowers mis-sizing outcomes downstream.
Core Metrics
- Recommendation completion rate
- Acceptance of the suggested size
- Conversion after using the tool
- Return rate for exposed versus non-exposed orders
- Customer support issues related to sizing confidence
Methodology
This page presents an implementation framework, not a universal promise. Return outcomes depend on category, catalog quality, and how clearly the recommendation is communicated.