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Intro call and brief
Your brand, products and references.
Fifth Dimension Club · AI email platform and Shopify studio
Storefronts that look like the brand and sell like it.
Custom Shopify themes for D2C fashion and lifestyle brands, from a studio that runs its own D2C apparel brands.
From $400Custom theme build
7–10 daysTypical delivery
0 errorsShopify Theme Check, 88 files
Our product · in development
Email that AI agents run, for Shopify brands and for other AI agents.
We're building an email platform that combines three things usually bought separately: Shopify marketing email, a developer API for transactional email, and inboxes that AI agents can send and receive from.
A merchant installs the Shopify app. AI agents built on Claude propose segments, write on-brand templates and set up flows like abandoned cart and post-purchase. The merchant approves each campaign before anything sends.
Deterministic code handles consent, unsubscribes, suppression and sending, with Amazon SES underneath. Pricing is per email sent, with unlimited stored contacts.
Three lanes, one platform
- Agent-run Shopify marketing
- Transactional email API
- Inboxes for AI agents
Where it stands
Core send pipeline, API, segments, templates and flows are built and tested. Pilots with our own D2C brands come next.
The problem
Free themes look like everyone else, and mobile product pages leak sales.
Looks like everyone else
Most small brands launch on a free theme, so the store never feels like the brand.
Missing the basics on mobile
No size guide and no sticky add-to-cart, right where shoppers decide.
Fake urgency
Fake countdown timers erode the trust a brand is trying to build.
App bloat
Stacked apps slow the store and cost sales on every page load.
Showcase · our in-house theme
Halcyon: an editorial, conversion-first theme for D2C fashion and lifestyle.
Built on Shopify Online Store 2.0. Four style presets: Editorial Noir Sand Bold
Mega menu and predictive search
Finds products, collections, pages and articles. Fully keyboard navigable.
Editorial storytelling
Editorial hero, slideshow, and a shop-the-look lookbook with product hotspots.
Product page built to convert
- Gallery with zoom, video and 3D/AR
- Colour swatches and size pills
- Size-guide drawer
- Sticky add-to-cart
- Delivery estimate
- “Complete the look”
Honest urgency only
Never fake timers.
Low-stock and countdowns come from real Shopify data.
Collection filters
Search & Discovery filters without page reloads, plus quick add and quick view.
Cart drawer
Free-shipping progress bar, upsells and order notes.
Accessible and lean
Focus states, keyboard support and reduced motion. Vanilla JS, no jQuery; theme.js is about 6.5 KB gzipped.
Services and pricing
One core build from $400, with add-ons when you need them.
Halcyon Custom Build Start here
From $400
- Halcyon installed and branded: fonts, colours, logo, navigation, mega menu
- Home page laid out with your imagery and copy
- Product page tuned for conversion
- Collection filtering and quick add
- Cart drawer with free-shipping bar and upsells
- Accessibility and speed pass
- Handover video and editor guide
- 1 round of revisions
- 7–10 day delivery
Custom sections
From $150 each
For example an editorial story, size calculator or bundle builder.
Product/collection copy and SEO setup
From $150
Monthly care plan
From $99/month
Updates, small changes and app conflicts.
Migration
Quoted
From another theme or platform.
Why us
Your code, a faster store, and urgency you can stand behind.
No lock-in
No licence lock-in or per-store fees. The code is yours.
Fewer conflicts, faster loads
Fewer app and theme conflicts, and fast mobile loads.
Honest urgency
Protects your brand and your consumer-law compliance.
Built by founders
Made by a team that runs D2C apparel brands, so every block exists to sell.
How it works
Five steps from brief to launch.
02
Direction
Design direction and preset choice
Editorial, Noir, Sand or Bold as the starting point.
03
Build
Build with your content
On your store, or on a dev store.
04
Review
Review and one revision round
05
Launch
Launch and handover
A handover video and an editor guide, so your team can run it.
Founders
Fifth Dimension Club is founded by Sudarshan “Sid” Kumar and Sonalika Majhi.
Sid is a co-founder of Fifth Dimension Club Corporation (Cheyenne, Wyoming, USA) and is based in Hyderabad, India.
He runs D2C apparel brands, including Small Science Society, which makes kids' science tees, and builds the themes himself.
Sonalika Majhi is co-founder of Fifth Dimension Club Corporation.
Hands-on with
- Shopify
- Amazon selling
- Brand design
- AI-assisted creative