Nailing Shoe Sizing with AI: A Step Towards the Perfect Fit

Shoe shopping should be exciting—like stepping into a new adventure. But for many customers, it’s a frustrating game of trial and error. Unlike apparel categories, shoe sizing is uniquely tricky—varied international size standards, brand inconsistencies, and varied fit preferences for different shoe categories make it hard to get the right size the first time.

At Secret Sauce Partners, we know that shoe sizing isn’t just about measurements—it’s about preferences. With our AI-driven Fit Predictor, we analyze behavioral data to understand what size actually works for each customer in each footwear product, ensuring a perfect match every time.

The Challenge of Shoe Sizing

Shoes aren’t one-size-fits-all, and even within a single brand, sizing can vary dramatically. Customers face multiple obstacles when trying to find their perfect fit:

• Size Variability: A size 9 in one brand might fit like an 8.5 in another.
• Different International Standards: Converting between EU, US, and UK sizes adds complexity.
• Category-Specific Fit Preferences: Sizing isn’t just about length—comfort depends on style and use case:
  • Running shoes: Need a precise fit to prevent injuries.
  • Open-toe sandals: Many shoppers prefer a slightly smaller fit.
  • Home slippers: Often bought in a more relaxed, looser fit.
• Personal Fit Preferences: Some people love the freedom of a roomier fit, embracing that “barefoot” feeling, while others want a snug fit that feels supportive and secure—like a firm handshake for their feet.
• High Return Rates: Footwear returns are among the highest in e-commerce, driven largely by size and fit issues.

The Secret Sauce Approach: Beyond Measurements

Traditional sizing solutions rely on foot measurements, which don’t account for individual fit preferences. That’s where our AI-driven Fit Predictor changes the game. With insights from 4.1 billion transactions across 100,000+ brands, we predict both size and personal fit preferences, ensuring:

• More accurate sizing recommendations tailored to individual shoppers.
• Lower return rates by reducing guesswork and trial-and-error shopping.
• Enhanced customer satisfaction, leading to higher conversions and brand loyalty.

The Future of Footwear Shopping

Shoe sizing shouldn’t be a guessing game. The perfect fit isn’t just about foot length—it’s about how a shoe makes you feel. Whether it’s the airy freedom of a roomier fit or the locked-in security of a snug size, finding the right balance should be effortless.

By harnessing AI and behavioral data, we make it easy to step into comfort and confidence—no hesitations, no returns, just the right fit.

Let’s step into the future of footwear shopping together. Contact us today to discover how AI-driven sizing can transform your customers’ experience and reduce returns for your brand.

About Secret Sauce Partners

Secret Sauce Partners is a pioneer in AI-powered fit and sizing solutions, trusted by leading marketplaces and retailers worldwide. As a pioneer in the Artificial Intelligence field focusing on fit & sizing, we developed the world’s first Fit AI solution 15 years ago, and continued to optimize it over the past 15 years covering every possible category and price point globally. Our AI has been trained by over 4.1 billion purchases and returns across 140,000+ brands. In Fit AI, the size of training data is critical to achieving success and we have the expertise to show it. Let us help you eliminate sizing friction, reduce returns, and build customer experiences that convert.