All CRO ideas
Product pageDesktopFriction

Put a size finder control right at the size grid

A Sizefinder control sits directly under the EU size grid, so the shopper can measure or answer a question instead of guessing between two sizes.

A shoe product page with an EU size grid, the note Choose your regular size and a Sizefinder dropdown directly beneath it
Wildlingproduct pagecaptured Nov 2026source

What it is

Under the grid of EU sizes the page says "Choose your regular size" and offers a Sizefinder control in the same column, before the add-to-cart button. The help is part of the selector, not a link to a separate chart page.

Why it works

The shopper who is between two sizes is the one most likely to abandon or to order both and return one. Putting the tool at the exact point of doubt resolves the question while intent is highest, instead of sending them away to a chart they have to read and come back from.

How to test it

Hypothesis
Placing a size finder control directly at the size grid will lift add-to-cart rate and reduce size-exchange returns versus a size chart link elsewhere on the page.
Primary metric
Add-to-cart rate (product page sessions)
Guardrail metric
Size-related return rate

Related ideas

Want this tested on your store?

We run the experiment, call the result honestly, and get paid on what it adds.

See the performance program