# Sticky, clearly labeled mobile filter bar: +106% filter use

- Outcome: Won
- Page type: Collection page (Ecommerce)
- Elements: Filters, sorting & site search
- Test run by: [Eastpak](https://liftarchive.com/practitioners/eastpak/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://wingify.com/success-stories/eastpak/
- Page: https://liftarchive.com/test/eastpak-mobile-sticky-filter-bar/

Eastpak redesigned its mobile filter bar and made it sticky, and filter use rose 106% with a 7% lift in click-through rate. The bag brand ran the test with support from the Wingify Services team, and it was published as a VWO case study. Before the change, only 5% of mobile visitors used the filters.

## Result

**+106% filter use**

- Filter interaction: +106% compared with the control.
- Click-through rate: +7%, as shoppers found relevant products more easily.
- No sample size, duration or confidence level was shared.

## Control

On mobile product listing pages, the filter bar was easy to miss. Only 5% of mobile visitors interacted with it.

## Variant

The filter bar was redesigned with clear, consistent labels and stuck to the top of the screen as shoppers scrolled.

## Why it likely won (our reading)

- A sticky bar stays in reach while scrolling, so shoppers can narrow the list the moment it feels too long.
- Clear labels tell shoppers what each filter does, which makes tapping it feel safe.
- Eastpak's range is large, so filtering saves real effort on a small screen.

## Caveats

No sample size, duration or significance was shared. The idea was developed with Wingify Services, the vendor that published the case study.

## How to run this test

- Hypothesis: If we make the mobile filter bar sticky and give it clear labels, then more shoppers will filter and click into products, because filtering will be easy to find and understand.
- Primary metric: Product click-through rate from listing pages
- Guardrail: Conversion rate
- Guardrail: Filter usage rate
- Guardrail: Bounce rate on listing pages
- Who should test it: Stores with large collections and lots of mobile traffic. Small catalogs with a few products per collection probably won't see much change.

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Credit: Eastpak ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/eastpak-mobile-sticky-filter-bar/).
Usage: Free to use, quote and build on, with credit and a link: name the practitioner or organization that ran the test and link to its LiftArchive page. The results belong to the practitioners who ran and shared them; the summaries and commentary are LiftArchive's.