● 01 · SIZEFLOW
Zero returns. More conversions. SizeFlow recommends the perfect size for every SKU — based only on height, weight and age. No body scan, no complexity. Just results.
▶ IN SHORT
The problem. Shoppers unsure about size either abandon the purchase or order two sizes to be safe, then return one.
The answer. SizeFlow is WeWear's AI size recommendation module for fashion e-commerce. The customer enters a few essential details — typically height, weight and age — and receives a size suggestion directly on the product page, before adding to cart. It integrates via a JavaScript widget on Shopify, WooCommerce, Magento, PrestaShop and custom platforms, with no backend development and go-live typically within 24 hours. It also supports technical garments, plus and petite sizes.
THE PROBLEM
70% of e-commerce fashion returns are caused by the wrong size. Every return impacts logistics, customer experience and margins. SizeFlow eliminates the problem at the source.
Customers guess. Static size guides are not enough. The result? Costly returns and frustrated customers.
Reverse logistics, quality control, refund: every return systematically erodes the margin.
A customer who receives the wrong size doesn't come back. SizeFlow protects customer lifetime value.
HOW IT WORKS
No body scan, no lengthy forms. Just height, weight and age — and SizeFlow does the rest, integrating product analytics and machine learning.
The customer enters height, weight and age directly on the product page. The widget is lightweight, customisable and available in all languages.
The model compares body data with the actual garment measurements, past buyer feedback and the proprietary European body shape dataset.
The customer receives the recommended size in milliseconds, with a confidence indicator. Every interaction improves the model over time.
FEATURES
Height + weight + age. The simplest and most immediate method — zero friction for the customer, maximum accuracy for the brand. Available across all verticals.
The customer films their body with a smartphone: in seconds the body shape is detected and the ideal size matched — no app download required.
For showrooms, physical stores or trade shows: integration with hardware body scanners for millimetre-precise measurement, ideal for formalwear and made-to-measure workwear.
Dashboard with usage data, requested size distribution, comparison with sold items and automatic flagging of SKUs with dimensional anomalies.
VERTICALS
API integration on any platform: Shopify, Magento, custom.
Precise measurements for bespoke clothing and high-end formalwear.
Corporate workwear, PPE and technical clothing for large volumes.
Healthcare uniforms and medical garments with high precision standards.
Thanks to We Wear, we are reducing the return rate related to size selection and improving the shopping experience for our customers on the Castelli Cycling, Sportful and Karpos Outdoor websites. A journey that combines technological innovation, data and customer focus, with the goal of making online shopping simpler, more sustainable and more personalised.
Chosen by leading brands
● FREQUENTLY ASKED
SizeFlow asks the customer for a few essential data points — typically height, weight and age — and compares them with the brand's size curve to suggest the best-fitting size. The recommendation appears directly on the product page, before add-to-cart.
Integration happens by adding a JavaScript widget to the product page, with no backend work. In most cases go-live happens within 24 hours of configuring the size curve.
SizeFlow works on Shopify, WooCommerce, Magento, PrestaShop and any custom platform that supports JavaScript, including headless architectures.
Yes. We support technical apparel — sportswear, equestrian, workwear — as well as plus and petite sizes. For these categories we configure dedicated fit logic together with the brand's product team.
Data is hosted on European servers. The platform is designed around GDPR principles and we provide a standard DPA for EU brands.
No. SizeFlow runs directly in the browser, with no registration or installation. The customer enters their details and receives a recommendation within seconds.
CONTACT
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