Mobile Shopping Size Recommendation
Mobile phones are no longer just communication tools, they’re our daily companions, fitness coaches, wallets, personal stylists, and shopping assistants. This shift has brought extraordinary opportunities and even greater expectations for fashion retailers.
It’s easy to see why. With smartphones now more affordable and function-packed than ever, mobile commerce has skyrocketed. Today’s consumers shop while commuting, watching TV, queuing for coffee, or juggling parenting duties. In this hyperconnected world, shopping is 24/7, and always one swipe away from being abandoned.
For fashion retailers, the message is clear: optimising for mobile isn’t just a nice-to-have, it’s business-critical.

At first glance, the rise of mobile seems like a golden era for online fashion. Web traffic from mobile devices now accounts for over 70% of visits in many markets, and with it has come a surge in potential revenue. But dig deeper, and the picture is more nuanced.
While mobile traffic has boomed, conversion rates haven’t kept pace. They’ve plateaued, or worse, declined. Why? Because mobile isn’t just a smaller version of a desktop. It’s a completely different environment, with its own rules of engagement.
Today’s shoppers are distracted and multitasking. They scroll with one thumb while holding a pram, dodging ticket inspectors, or half-watching a series. They want to make fast, confident decisions, or they’ll bounce.
Add to this the limited screen space, slower page loads on mobile networks, and the frustrating reality of zooming in and out to see size guides, and it’s no wonder many mobile journeys end in friction.
The Promise and Pitfalls of Mobile Shopping
The Hidden Cost: Rising Returns and Slipping Loyalty
When shoppers are forced to guess their size or can’t be sure how an item will fit, the consequences ripple across the entire retail operation. First, they abandon carts. Or worse – they buy multiple sizes, planning to return the ones that don’t work. This “bracketing” behaviour is costly and unsustainable.
Returns are now one of the biggest pain points in fashion retail. They erode margins, damage sustainability efforts, and tie up inventory for weeks. And on mobile, the problem is magnified: smaller screens mean less product context, rushed decisions, and fewer clues about fit. The result? Higher return rates and lower repeat purchase rates.
Retailers are left grappling with ballooning logistics costs and diminishing brand trust. But there is a solution, and it starts with smarter sizing.
Mobile Size Recommendations That Keep Up with Real Life
Prime AI’s clothing size and fit recommendation technology is purpose-built for today’s mobile-first, time-poor shopper. Our tools deliver personalised size suggestions instantly – right on the product description page – without the need for customers to enter measurements or download an app.
For shoppers, it’s seamless: visit a product page, tap the size finder, and get an instant recommendation tailored to your body and fit preferences. It’s mobile-native. It’s frictionless. And it’s designed for people with zero spare time.
For retailers, it’s transformational. Our predictive AI doesn’t rely on static size charts. Instead, it learns continuously from purchases, returns, product attributes, and real-world customer feedback. Over time, it becomes more precise for every SKU, every fit profile, and every shopper.
The Results Speak Volumes
Prime AI isn’t theoretical, it’s proven. Leading fashion brands across the globe have already unlocked measurable gains by integrating our predictive size and fit technology.
- Arena, the global swimwear leader, saw a 26% increase in conversion rates and a 29.6% reduction in returns when customers ordered the recommended size, averaged across multiple swimwear categories. With size and fit being critical in swimwear, Arena used Prime AI to help shoppers find their perfect match the first time.
- When customers used Prime AI’s Size Finder while shopping for Hugo Boss items, return rates dropped by up to 44% across select product lines, demonstrating the power of accurate sizing in reducing friction and increasing satisfaction.
- For Mango, one of Europe’s most recognisable fashion names, customers using our tool saw a 29% reduction in returns for menswear, and 32% in children’s clothing, with some product collections achieving return reductions of 62%.
- Across a multi-brand retailer featuring 14 different fashion labels, consistent use of Prime AI by shoppers led to significantly lower return rates, showcasing the technology’s scalability and effectiveness across a diverse product mix.
These figures are not projections, they’re real-world results from shoppers using Prime AI’s size and fit recommendations across categories from premium tailoring to kidswear. By helping customers get it right the first time, Prime AI reduces bracketing, lifts buyer confidence, and boosts conversions. More than just metrics, these outcomes reflect a deeper shift in how consumers shop, trust, and engage with fashion online, and show how retailers can meet the demands of a mobile-first, fast-paced generation with data-driven precision.
See how Clothing Size Finder Pro has helped brands slash returns
Designed for Speed, Built for Fashion
Prime AI was created to fit the rhythm of real life. Our technology works in the background, so shoppers don’t have to stop, measure, or doubt. Instead, they flow naturally through the buying journey, from browsing to basket in minutes.
Unlike older rule-based sizing solutions, our system adapts to changes in product shape, brand fit, or customer preference. It can even distinguish between styles that require a looser or tighter fit, like tailoring versus loungewear, and recommend accordingly.
Whether you’re a fast fashion powerhouse or a premium heritage brand, the result is the same: fewer returns, higher trust, and a smoother mobile journey.
Fashion Is Fast. Fit Should Be Too.
In today’s mobile world, attention spans are shorter than ever. If your shopper can’t make a confident choice in under 30 seconds, they’ll scroll away.
Size uncertainty is one of the last major friction points in online fashion, and it’s especially painful on mobile. Prime AI eliminates this uncertainty with intelligence, speed, and style.
The fashion industry has already digitised its storefronts, its payments, and its supply chains. Now, it’s time to modernise the most human part of shopping: fit.
Take the First Step Toward Smarter Sizing
Whether you’re aiming to improve your first-time buyer conversions, reduce return rates, or simply offer a more personalised experience, we’re ready to help.
Let’s make sure your shoppers find their fit, the first time, every time.