
Reduce Returns up to 20%
FitOS™ delivers precision fit—less waste, fewer returns, happier customers
Smarter Sizing for Shoppers.
Powerful Fit Insights for Brands.
Brands, meet your secret weapon.

Shop Smarter, Skip the Guesswork
Nail your product sizes across materials and styles.
Fast & Easy – Get your shoppers' best size in minutes.
Fewer Returns, More Wins – Reduce fit-related returns, and improve customer trust & loyalty.
Seamlessly Integrated – Works across your favorite platforms (Shopify, Magento, and more.)
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Cut Returns, Boost Profit
FitInsights unlocks real data on market opportunities, helping you create better-fitting products that customers love.
Spot the Gaps – See where your sizing misses the mark.
Cut Returns, Boost Profit – Fewer returns mean a healthier bottom line.
Fit That Keeps Customers Coming Back – Nail the fit, build brand loyalty.
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Our Industries
- Mass-Market
- Athletic & Performance Wear
- Ready-to-Wear
- Sustainable Brands
- Industry Uniforms
- Bridal & Special Occasion Wear
Why FitOS™
Data-Driven Accuracy
No guesswork, just smart sizing.
Seamless Integration
Plug into your e-commerce and design workflows (Shopify, Magento, and more)
Sustainable Impact
Better fit = fewer returns = less waste.
Let's Make Fit Frustration-free
Whether you're shopping or shaping the next big fashion line, FitOS™ makes fit frustration a thing of the past.
Recognized for Innovation & Backed by Industry Experts
"I was blown away by the fit. I know what it takes to get a fit right. These are world class jeans."
- Jonathan Cheung, SVP & Creative Director at Lululemon, former Head of Design at Levi's

Time's 100 Top Greentech Award
2024 Winner

Lowercarbon Capital
Lead Investor

Data Collective Venture Capital
Lead Investor