Sizing & Fit Data
Buy and sell sizing & fit data data. Which sizes customers order, keep, and return. This data alone could eliminate 40% of fashion returns.
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Find Me This Data →Overview
What Is Sizing & Fit Data?
Sizing and fit data captures the complete customer journey through apparel and footwear purchases: which sizes are ordered, which are kept, and critically, which are returned. This dataset reveals patterns in fit preferences, body measurements, and product dimensions across demographics and geographies. By analyzing return rates tied to specific sizes, fit issues, and product variants, retailers can identify systematic fit problems before they reach scale.
Market Data
40%
Potential Return Reduction
Source: FileYield
Who Uses This Data
What AI models do with it.do with it.
Fashion & Apparel Retailers
Major e-commerce and brick-and-mortar fashion brands use sizing data to optimize inventory mix, improve product descriptions, and reduce costly returns logistics.
Footwear Manufacturers
Shoe brands analyze fit data across size runs and widths to refine last designs, identify manufacturing inconsistencies, and create better fit guides.
Supply Chain & Logistics
Operations teams use return patterns tied to sizing to forecast reverse logistics costs, plan warehouse handling capacity, and negotiate carrier contracts.
Product Development & Design
Design teams leverage fit feedback to validate new silhouettes, adjust grading tables, and ensure size consistency before full production rollout.
What Can You Earn?
What it's worth.worth.
Small Dataset
Varies
Typically 500–5,000 transactions with sizing and return flags
Mid-Market Dataset
Varies
10,000–100,000 transactions with demographic and product attributes
Enterprise Dataset
Varies
100,000+ transactions across multiple seasons, categories, and customer segments
What Buyers Expect
What makes it valuable.valuable.
Accurate Size & Return Mapping
Clean records linking ordered size, returned size (if applicable), and reason code. Null or ambiguous returns reduce dataset value significantly.
Product Metadata
Product ID, category, brand, color, material, and fit type (e.g., slim, regular, relaxed) must be included to enable segmented analysis.
Customer Demographics
Age, gender, location, and purchase history help buyers validate fit patterns across cohorts and identify underserved segments.
Temporal Consistency
Data spanning multiple seasons or years is more valuable than single snapshots, as it reveals seasonal trends and repeat purchase behavior.
Low Duplication & Privacy Compliance
Data must be deduplicated and stripped of personally identifiable information while preserving useful demographic signals.
Companies Active Here
Who's buying.buying.
Optimize online inventory allocation, refine size recommendations, and reduce return rates on size exchanges.
Validate fit consistency across manufacturing partners and refine product development cycles.
Analyze fit across body types and movement patterns to improve product fit guides and size inclusivity.
Predict fit preferences to improve item selection accuracy and reduce shipping costs for exchanges.
FAQ
Common questions.questions.
Why does sizing data reduce returns by 40%?
Fit and size mismatches account for a large portion of fashion returns. By analyzing which sizes fit which body types and product types, retailers can improve product descriptions, offer accurate size recommendations, and identify fit issues in design before shipping inventory. This reduces customer disappointment and return processing costs.
What format should sizing & fit data be in?
Buyers prefer structured datasets with one row per transaction, including: order date, product ID, ordered size, returned size (if applicable), return reason, customer demographics, and product attributes (category, brand, fit type). CSV, Parquet, or database export formats are standard.
How much historical data do I need to sell?
Datasets of 5,000+ transactions are attractive to smaller buyers; enterprise buyers typically want 100,000+ transactions spanning multiple seasons. Longer historical periods reveal seasonal and trend patterns, making data more valuable.
Can I sell data if customers haven't explicitly consented?
Sizing data must be anonymized and comply with privacy regulations (GDPR, CCPA, etc.). Remove names, emails, and phone numbers; retain demographic signals (age range, location, gender) only if you have legal basis. Consult your privacy and legal teams before selling customer data.
Sell yoursizing & fitdata.
If your company generates sizing & fit data, AI companies are actively looking for it. We handle pricing, compliance, and buyer matching.
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