Size Suggestions & AI Engine
Configure the Smart Fit Engine to slash your return rates.
How The Engine Thinks
The Smart Fit Engine doesn't just guess. It runs every customer measurement through a precise, 3-stage validation pipeline instantly.
Calculate Base Ease
The engine compares the product's exact garment dimensions against the customer's body profile.
Apply Tolerances
Every measurement is graded against your store's custom Comfort Boundaries. If a measurement falls outside the ideal zone, the AI applies a penalty score based on your strictness settings.
Weight & Recommend
The AI factors in your Priority Weights (e.g., Chest is more critical than Sleeve) to generate a final confidence score out of 100. The highest scoring size is recommended to the shopper.
Engine Configuration
You are in full control of the AI. Through your Shopify Admin dashboard, you can fine-tune exactly how strict or loose the engine should be when suggesting sizes.
Penalty per Inch
Controls how strictly the AI penalizes measurements that fall outside the ideal ease range.
Comfort Boundaries
Define the strict floor and ceiling for ease. Measurements within this zone get perfect scores.
Tie-Breaker Logic
When two sizes score identically, auto-select whether to recommend the looser or tighter fit.
Priority Weights
Assign a 1-5 importance weight to every measurement so the AI prioritizes critical fit points.
Engine Configuration Examples
Fit Score Thresholds
Priority Weights
ExampleSmart Body Predictor
No measuring tape required. Our proprietary algorithm accurately predicts 15+ body dimensions using only the customer's Height, Weight, and Age.
- Adapts to your demographic
- Pre-fills customer profiles instantly
- Accurate to within 1-2 inches
Continuous Learning AI
The engine gets smarter with every sale. It continuously analyzes accepted and returned sizes across your entire catalog to self-optimize its predictions over time.
- Learns from return data patterns
- Hyper-tunes to your specific sizing
- Fully autonomous self-improvement