Case study · Shopify

Redefining Digital Luxury for ZILK Sleep with a Custom Shopify Experience

Our client is looking for a sleek and modern website for their one-of-a-kind product that matches their product requirements and attracts a high-end audience. Well, here’s how it went!

1 monthKickoff to launch

9Custom features built

92%Faster page load times

Book a Strategy Call Visit zilksleep.com

Country: Netherlands
Project: Shopify Custom Theme
Timeline: 1 month
Built on: Shopify

zilksleep.com

ZILK Sleep homepage showcasing silk sleep essentials and luxury bedding designed for skin and hair restoration

Homepage, zilksleep.comHoverTap to scroll the full page

01The brief

Business Overview

ZILK Sleep is a premium Shopify store offering luxury silk products infused with silver ion technology. Founded by aesthetic expert Elizabeth Cook, the brand merges science and beauty to promote healthier skin and hair through silk’s natural restorative properties.

Our goal was to translate ZILK’s refined, science-backed brand identity into a visually elegant and high-performing Shopify experience — one that feels as smooth and sophisticated as the products themselves.

02What we built and why

Four decisions that shaped the store

02.1

Every colour gets its own product page

The problem: Shopify groups colours under one product, so collections showed a single colour and search engines saw a single page.
What we built: Each colour as its own product with its own URL, linked together by swatches. Built into the theme, with no third-party app.
Why this way: People choose silk by colour. Native code also avoids an app's extra script and monthly fee.

64colour pages now listed in Google

02.2

A sleep kit that lifts order value

The problem: The Silk Sleep Kit had to sell as one product while keeping stock accurate for each piece inside it.
What we built: Bundle logic in the theme, with Order, Pre-order and Notify me states that switch automatically with stock.
Why this way: Bundle apps load on every page. Native logic keeps product pages fast and never sells a kit that can't ship.

€89average kit order vs €54 for single items

02.3

Every review moved over, nothing lost

The problem: ZILK's customer reviews were its strongest proof. Launching with empty product pages would cost sales.
What we built: A full migration of existing reviews, matched to the new colour-level product pages, with verified-buyer badges kept.
Why this way: A premium price needs social proof on the page, from the first visit.

1,240reviews migrated on launch day

02.4

Rich visuals that still load fast

The problem: The brand relies on large imagery and video, which usually makes mobile pages slow.
What we built: Compressed media in modern formats, lazy loading below the fold, and a lean theme with minimal JavaScript.
Why this way: Most shoppers arrive on mobile, and a slow luxury store feels cheap.

1.7smobile load time (Largest Contentful Paint)