Why Your Customers Struggle to Find the Right Size – and How a Smart Size Finder Can Fix It

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size finder

Shopping online can feel like a struggle when customers aren’t sure which size to choose. But why is it so difficult for them to find the right fit?

Because most customers rarely know – or even consider – these crucial factors when trying to figure out the right size:

Product measurements
Fabric elasticity
Intended fit (tight, fitted, loose)
Built-in design and wearing ease

To make it even more complicated, each brand sizes differently. An “M” isn’t the same everywhere. Yet most fashion brands still rely on static size charts or generic tools that barely help.

There are so many inaccurate size finders

Even when brands integrate a size recommendation tool, it’s often hidden behind a small link or pop-up that shoppers ignore. And even if customers use it, most tools still rely on the oldest, most inaccurate method – brand size guide matching.

They simply ask:

“Tell me your size in Zara, and I’ll tell you your size here.”

But what if a shopper wears three different sizes in Zara? Which one should they trust?

Another common method is using average data from thousands of buyers. That sounds smart — until you realize it’s still inaccurate for 70–90% of customers. Every body is unique, and averages can’t capture personal differences in shape, fit preference, or fabric behavior.

That’s where an advanced size finder changes everything.

The Future of Fit: A Size Finder That Thinks Like a Tailor

Imagine a size finder that instantly builds trust between your brand and your customers. One that understands the nuances of garment construction and the individuality of body shapes.

Here’s what happens when you use an intelligent size finder like SizeSense.ai:
✔ Customers confidently pick the right size
✔ Fewer returns and no costly alterations
✔ Your brand becomes known for perfect fit
✔ Customers feel seen, understood, and ready to wear their orders the very next day

At SizeSense.ai, we’ve built a size finder that works with the precision of a master tailor – not guesswork.

All you need to do is upload your tech pack data. Our algorithm handles the rest:

  • 94% accuracy
  • Matches body measurements with garment design
  • Factors in body shape, fit preferences, garment ease, and fabric elasticity
  • Calculates fabric elasticity with unmatched precision – because stretch can make or break a fit

And we’re not stopping there. We’re working on new features such as:
✨ Body scanning
✨ Virtual try-on
✨ AI styling assistant

Turn Fit Into a Growth Driver

When fit stops being a barrier, it doesn’t just reduce returns – it becomes your brand’s most powerful growth driver.

So instead of losing customers to uncertainty, make sizing and fit your next conversion booster.

Offer your shoppers precise size recommendations – like a master tailor would – with SizeSense.ai, the next-generation size finder built for fashion brands that care about confidence, comfort, and sustainability.

SizeSense.ai Size Recommender Features

Size Recommendation

SizeSense’s key innovation is its proprietary size recommendation algorithm, developed from real-world expertise in made-to-measure fashion, patternmaking, and garment production.

Unlike other tools, SizeSense achieves 94% accuracy by making a 1:1 alignment between customer body measurements and each garment’s actual measurements -factoring in body shape, fit preferences, clothing design, and fabric elasticity.

Our technology sets us apart by uniquely calculating fabric elasticity’s impact on fit, ensuring highly precise recommendations that reduce returns and boost conversions for fashion brands.

AI Styling Assistant

  • Conversational interface – customers can ask anything
  • Measurements from body-scan or manually from user
  • Size-calculation
  • Virtual-try-on
  • Product recommendation (personalised style assistant) tailored to the customer’s body measurements and shape, using the brand’s inventory
  • Up-sale and cross-sale
  • Location/page based reminder prompts – for example check size at checkout, etc.

Body Scan

Customers are able to estimate their body measurements directly from an image. They can review, adjust, and save their measurements from their first interaction – making every future purchase faster and more personal.

If the user provides measurements manually, we can calculate size using only the chest, waist, hips.

But if customers upload a photo of themselves, they’ll receive a size recommendation based on their chest, waist, and hip circumference, as well as arm length, inseam, and shoulder width and height.

 Virtual Try-On

Yes, we’re integrating virtual try-on – but with a twist. Customers will only be able to try products that fit their measurements. Because true realism starts with the right fit.

Upsells & Cross-sells

No more random recommendations. Customers will only see products we’ve already verified will fit them – boosting satisfaction and reducing returns.