Size Is the Biggest Dealbreaker in Online Shopping

When it comes to online fashion, size is often the hidden dealbreaker. Customers may love the design, color, and price of a garment, but if they’re not confident it will fit, the purchase stalls.

When sizing uncertainty creeps in, shoppers often:

This means you can spend a fortune on advertising and still lose the sale – simply because someone couldn’t figure out their correct size.

Real-World Example of Size Confusion

Just last week, I spoke with someone who shared their frustrating online shopping experience:

“I just bought an XL coat online. The specs were listed, but I’m normally a Large and wanted something more comfortable for my flight, so I ordered XL. The chest was 53 cm (106 cm around), and the length was 75 cm. It didn’t fit, so I returned it and got a 3XL, which still feels tight and makes me look like I’m wearing a Medium!”

When I asked for his chest measurement, he replied: 104 cm.

The issue wasn’t his body – it was the assumption that size is universal across brands and product types. In reality, nothing could be further from the truth.

Why Size Isn’t Universal

Most shoppers assume they are the same size across every brand and every type of clothing. But this is a false assumption that leads directly to returns.

Here’s why:

All of this creates a confusing experience for shoppers, making size one of the biggest barriers to online fashion sales.

Solving the Size Problem with AI

At SizeSense.ai, we take the guesswork out of sizing. Our technology provides accurate, personalized size recommendations by analyzing:

The result? Customers get the right size the first time. That means fewer returns, less frustration, and more loyalty.

Final Thoughts

Fit isn’t one-size-fits-all. It’s personal, contextual, and often misunderstood. For fashion brands, solving the size challenge is one of the most impactful ways to increase sales, build trust, and reduce costly returns.

With SizeSense.ai, you can deliver confidence at checkout and give shoppers the certainty they need to hit “Buy Now”. SizeSense is available for Shopify stores from the App Store, but can also be used with via our integration API. Schedule a demo, or contact us via chat if you want to learn more.