Project summary
This project is a good fit for retailers who are outgrowing their current Shopify setup and need a store that can handle more products, more categories, and more frequent updates without becoming hard to manage.
This case study shows how Rainstorm redesigned their store into a high-performance mega-store on Shopify, improving navigation, page flexibility, and overall usability. The rebuild focused on making it easier for customers to browse products, while giving the Sunyee team more control over content and layout as the business continues to grow.
Who this project is relevant for
This project is ideal for retailers and ecommerce teams who need a flexible, scalable Shopify setup for a large and varied product range.
- Large or growing retailers with a wide and diverse product range
- Outdoor, 4x4, camping, home and garden, or automotive brands
- Shopify stores looking to upgrade to OS 2.0
- Businesses preparing for a mega-store layout
- Merchants wanting better navigation and product discovery
- Teams needing flexible templates and metaobject-driven content control
Before & after: Sunyee’s Shopify store redesign
From restricted layouts to a modern, flexible Shopify mega-store that delivers a smoother shopping experience

Before

After

About Sunyee International
Founded in 2010, Sunyee International is a Melbourne-based eCommerce retailer specialising in 4x4 accessories, camping gear, and outdoor living products. Their range includes lighting, power stations, solar panels, and lithium batteries, helping customers stay powered on every adventure.
With such a broad and growing product range, clear navigation and fast performance play an important role in the overall shopping experience. Beyond outdoor gear, Sunyee also offers an extensive selection of home essentials, garden tools, and products for kids and pets, all at affordable prices.
Project goals & challenges
Sunyee’s existing Shopify store was functional but limited in its ability to present a growing and diverse product range. With ambitions to create a mega-store experience, the brand needed a design and structure that could showcase more categories without compromising usability.
The previous theme lacked the flexibility of Shopify OS 2.0, making it harder for the team to update content and maintain a consistent, professional look across the site. Navigation and page layouts were restrictive, limiting how products could be displayed.
In addition to these design and structural constraints, Sunyee wanted a faster, more optimised store to improve the customer experience and keep shoppers engaged. The challenge was to deliver a visually appealing, high-performance store that also gave the Sunyee team more control over their content
Services and capabilities delivered
For this project, I focused on improving navigation, flexibility, and performance so the store could scale with a growing product range.
- Shopify store redesign for a multi-category retailer
- Custom Shopify OS 2.0 theme build
- Category structure and navigation planning
- Custom mega menu for faster product discovery
- Metaobjects and editable sections for easy content updates
- UX and UI improvements for clearer browsing
- Mobile-first layout and design
- Performance and speed optimisation
Results
The redesigned Sunyee store delivers the mega-store experience the brand was aiming for. The new Shopify setup makes it easy to manage flexible page layouts, showcase a larger product range, and keep content up to date without relying on developers.
Navigation is clearer and more intuitive, helping customers move across categories without friction. Performance improvements have also created a faster, smoother shopping experience that supports stronger engagement.
Most importantly, the Sunyee team now has full control over their site, allowing them to move quickly on seasonal campaigns, new product launches, and ongoing growth.
Key outcomes
- Faster store performance and quicker page loads
- Clearer navigation across a wide product range
- A modern Shopify setup that’s easy to update and manage
- Improved product discovery through a custom mega menu
- Greater flexibility using editable sections and structured content
- A store built to support ongoing growth
Inspired by Sunyee’s redesign? Let’s explore how we can transform your store
Book a discovery call today and take the first step toward a higher-converting site












