The real problem is a bad user experience that leaves shoppers wondering:
“Will it fit? Will I feel good in it?”

High returns and low conversion are not problems. They’re consequences of bad user experience

Zizr helps you deliver precise, personalised size recommendations — built on real purchase behaviour, not averages — so your customers feel confident every time they buy.
>98% accurate recommendations. No photos or weight data required.
Quick installation, native Shopify plugin.

Download the free sizing playbook

Uncertainty is killing your conversion rates

When customers can’t be sure about fit, they hesitate, abandon carts, or buy multiple sizes and return most of them.
It’s not a logistics problem. It’s an experience problem.

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Personalised sizing installed in 3 simple steps
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1. Connect your store and inventory to Zizr

Fully automated, handled by Zizr. Done in minutes, not manual updates or mapping.
Shopify native plugin available.
All types of clothing and shoes.

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2. Zizr is added to your product pagess

Zizr’s AI instantly plugs into your catalogue and learns from real transactions done by real shoppers. Every item, every SKU. Recommendations are personal and accurate from day one.

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3. User Experience installed

Every shopper sees guidance tailored to them—no photos or weight data required. Can also easily use previous purchases to get recommendations.

Why Zizr is different and more than a Sizing Tool 

“All problems can be solved with the right amount of the right data. Sizing included.”  
The challenge? Most systems rely on the wrong inputs. A woman’s height and weight may be data, but they aren’t the *right* data. Because sizing isn’t about BMI and averages — it’s about **fit**. And fit is deeply personal.

At Zizr, we’ve built a system that learns how garments feel, not just how they measure. Our AI doesn’t guess. It listens, adapts, and improves — using real wardrobes, real products, real feedback and real outcomes.

✅ SKU-level recommendations

✅ No averages or guesswork

✅ Fast to integrate

✅ GDPR-ready

✅ Built for small and mid-sized brands

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Fit is personal

Zizr’s Twin System connects shoppers to real people with similar preferences — not just measurements. Like borrowing shoes from a friend who wears exactly your size. Or the other friend you can borrow dresses from, in exactly your style and fit preferences.

SKU matters

Zizr’s Global Product Catalog is the first database that holds sizing intelligence at the SKU level — not brand level. It understands how *each specific product* fits, across brands, regions, and generations. That means no more guesswork like “if you're this in Nike, you're that in Adidas.” Zizr will tell you to size half size up in the new Adios Pro 4. Because it knows the model, not just the brand. And has the data to back it up.

Built to learn

Zizr combines behavioral and transactional data with something no other system captures: direct, SKU-level feedback from both shoppers and retail teams. These signals feed into a real-time learning engine that adapts to every shift in style, sizing, and customer behavior. And the best part? We need surprisingly little of it to reach >99% accuracy. If you’re curious how we do it — we’re happy to show you.

Automatic integration with Shopify.
How?