200ml and 400ml size options on product pages: +3% transactions
Commentary byLiftArchiveOur analysis, not theirsShowing both available sizes, 200ml and 400ml, on shower gel product pages lifted the transaction rate by 3%.
Yves Rocher ran this test on its shower gel category, and it was published as a VWO case study.
Across 8,787 unique visitors, it brought in about EUR 3,000 more revenue than the original.
- Clicks on size options: +5%. Shoppers used the new choice.
- Cart visits: +4%.
- Transaction rate: +3%.
- Extra revenue: about EUR 3,000 compared with the original, within the shower gel category only.
The change
The variant adds a size picker showing both bottle sizes.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
Each shower gel product page showed only the size the shopper was viewing. Many shoppers didn't realize other sizes existed.
Variant
The product page displayed the available size options, 200ml and 400ml, so shoppers could see and pick between them.
Why it likely won
Our reading of the result, not the practitioner's claim.
- Shoppers who wanted a bigger or smaller bottle no longer had to search for it, or leave.
- Seeing two sizes side by side lets people pick the one that fits their budget or needs.
- A larger option can appeal to repeat buyers who want better value per bottle.
Caveats: The test covered 8,787 unique visitors in one product category, a small segment of the site. No duration or confidence level was shared.
Who ran it
Yves Rocher ran this test for Yves Rocher and published the results (VWO case study). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on Yves Rocher →
How to run this test on your store
- Hypothesis
- If we show all available sizes on each product page, then more shoppers will add to cart and buy because they can find the size that suits them without searching.
- Primary metric
- Transaction rate
- Guardrails
- Average order value
- Add-to-cart rate
- Share of orders by size
- Who should test it
- Stores that sell the same product in several sizes as separate pages. If your sizes already appear in a picker, there's nothing new to show.
Questions
Should each product size have its own page or a size picker?
Shoppers on a single-size page may not know other sizes exist.
Yves Rocher saw a 3% higher transaction rate after showing both sizes on the page.
Can a small test like this be trusted?
The test had 8,787 visitors in one category, so treat it as a promising start.
Yves Rocher used it as a pilot before rolling the idea out more widely.
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