Alternative Product Recommendations on Size Finder

When a product is out of stock in a shopper’s size, Prime AI’s Size Finder ensures the journey doesn’t end there.

Instead of hitting a dead end, our technology provides real-time alternative product recommendations – items that are in stock and guaranteed to fit, based on the shopper’s body profile and fit preferences.

Prime AI understands your full catalogue, including how each item fits, regardless of inconsistent sizing labels or brand differences, so it can instantly match customers to the next best option, without any guesswork.

Back to comparison ➔

Fully customisable recommendation logic:

You decide how alternatives are served. For example, you can choose to:

  • Show only products from the same brand

  • Limit suggestions to the same category (e.g. dresses to dresses)

  • Prioritise the same colour across different brands or collections

  • Add visual similarity matching using Prime AI’s Visual Search to recommend lookalikes based on product images and attributes – with fit compatibility baked in

Why it matters

Out-of-stock moments are critical decision points. Without smart alternatives, you risk losing the sale entirely. But with Prime AI, you maintain the shopper’s flow – keeping them engaged, increasing conversion, and delivering a consistent, personalised fit experience.

It’s a win for your customer and your bottom line.

Still not sure which is right for you?

Reviews

Anna - Digital Director (UK)
Handy tool and fantastic customer service
The tool allows us to offer accurate fitting information to our customers, including information based on returns to maintain accuracy. The Prime AI team are very helpful if/when issues arise, and are quick at responding and solving problems, as well as suggesting new ways the tool can be implemented.
Denis - Performance Marketing Manager (Romania)
Efficient Cooperation
Our cooperation with Prime AI is very successful, we are happy with the results. Also, optimisation of the tool has been implemented after multiple feedback sessions to which Prime AI has been very open. The UX was not the best, but after multiple feedback sessions, things got fixed.
Rosie - Head of e-commerce and brand (UK)
Great software and amazing account management
Prime AI's account management and monthly reports/ recommendations have been brilliant. We have been able to customise the platform to suit our needs and no ask is ever too much 🙂 ... We have been able to make informed, strategic business decisions and the product is great from a user interface point of view with seamless integration.

We analyed 1,000,000 returns. Here's what we found...

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