Custom Feature Enhancements for

RomperJack Shopify Store

RomperJack, an 8-year-old men’s rompers and jumpsuits brand, needed a reliable tech partner to keep its premium Shopify store stable and converting. As a brand built on standout style and a loyal following, they sought expert help to fix a product page that was losing buyers and a theme that couldn’t be updated without breaking.

Challenges

RomperJack had been running for 8 years on a premium Shopify theme, but two problems were quietly working against the store. The theme couldn’t be updated without breaking years of custom code, and the product page — where most mobile shoppers made their decision — was losing buyers before they ever added to cart. The brand needed a store that was stable to maintain and a product page that actually sold, without losing its premium feel.

Key challenges included:

Updating the premium theme reset years of custom code every time, forcing a choice between breaking the store or never updating it.
The product page converted at roughly 1%, with most visitors leaving before reaching add-to-cart.
A broken size finder — the most-clicked element on the page — kept failing and pushing shoppers away.
Upsells were stacked on the product page and in the cart, adding friction right at the moment of purchase.
Low-value buttons like “wishlist” and “ask your friends” took up prime space next to the buy button, while trust signals were buried.
With around 80% of traffic on mobile, the page layout and missing sticky add-to-cart were failing where it mattered most.

To address these challenges, we rebuilt the product page around the buying decision and moved the store to a safe, version-controlled update workflow tailored to RomperJack’s needs.

Our Approach & Solutions

Solutions Provided

1. CRO-Powered Product Page Rebuild

We restructured the product page around the buying decision, backed by 300+ session recordings.

Added a prominent, sticky Add-to-Cart that stays within reach as users scroll.
Rebuilt the size guidance and moved reviews and trust signals into the buy box.

2. Decluttering the Buy Zone

We removed the elements that were taking space but not driving sales.

Removed “ask your friends”, “wishlist”, and colliding discount popups that got almost no clicks.
Reduced stacked upsells that added friction at the point of purchase.

3. Safe, Independent Theme Updates

We moved the store onto a version-controlled workflow so updates stop breaking things.

Updates are applied and reviewed on a duplicate theme before going live.
The store can take new theme features without wiping years of customization.

4. Mobile Experience Fixes

With ~80% of traffic on mobile, we fixed the issues hurting mobile shoppers most.

Resolved image cropping, layout shift on load, and badge wrapping.
Fixed cart-drawer bugs across devices and browsers.

5. Measurement & Tracking Foundation

We set up the data foundation to measure impact and guide the next round of CRO.

Verified GA4 funnel tracking and segmented by source, device, and browser.
Configured Microsoft Clarity for ongoing session and heatmap insight.

Technologies Used

Shopify Liquid

Shopify Cart API

JavaScript & jQuery

CSS Animations

Microsoft Clarity

Google Analytics 4

Results & Impact

Enhanced User Experience: The rebuilt product page leads with the reason to buy and keeps the buy button in reach the whole way down, with the clutter gone.
A Clearer Path to Purchase: Removing dead-weight buttons and stacked upsells gave shoppers a focused, friction-free route to checkout. conversion rates.
Update-Safe Store: Theme updates no longer reset customizations — stability without being locked to a single developer.
Measurable Foundation: Tracking by source, device, and browser is in place to quantify conversion lift over the following weeks.

Results that speak for themselves.

★ ★ ★ ★ ★
CLIENT FEEDBACK

The new PDP looks great. I like the updates to the colors — it's less cluttered by removing the ask-friends, wishlist, and social icons."

★ ★ ★ ★ ★

Emmanuel Sullivan

Owner, RomperJack