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Sonno
Product page
Research + 10 tests designed
Sonno: site research and a ten-test mattress roadmap
A page-by-page teardown of a handmade UK mattress store, turned into ten ranked A/B tests with mock-ups. No called winning lift is on file.
RPV lift
CVR lift
Test duration
Research and design, 2025–2026
Industry
Handmade UK mattresses
Before vs after
Control vs Variant
Control

Price · before. The extra 15% is promised at checkout, not in the price.
Variant

Price · after. The final price, with the extra 15% already taken off.
Hypothesis
What we expected to happen
If the real price, the trial and warranty, and a delivery date sit next to the buy button, fewer shoppers will leave a high-ticket mattress page in doubt.
What we changed
The change in detail
- Ten ranked tests, including: trial and warranty in one line under Add to basket; the final price with the extra 15% already taken off; a real delivery date under the button and in the cart; stars and short reviews in the buy zone; mattress cards that stand apart; a “Sonno vs a mattress in a box” comparison; size tiles with full prices and a firmness guide; and swapping the cart countdown for reassurance.
- Mobile-menu directions: a visual category grid with Trustpilot proof, and a New & Trending product row with prices and USP icons.
- Earlier, in 2025, a cart drawer vs cart page test was also designed.
Results
What the test showed
The work in our sources is the research, the ranked roadmap and the mock-ups. No called winning lift is on file for Sonno, so this case study shows the work itself.
Analogies in the deck to other brands’ test lifts are not treated as Sonno results.
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