No Quizzes. How Zero Input Size Finder Drives 50%+ Influence and Reduces Returns
When it comes to solving sizing in fashion e-commerce, many tools promise accuracy but fall short where it matters most: influencing enough transactions to actually reduce refunds. If your size recommendation solution only impacts 20 – 30% of orders, you won’t move the needle on overall return rates. Even if recommendations are accurate, some customers will still order larger or smaller sizes, diluting the impact.
That’s why Prime AI created Clothing Size Finder PRO a sizing engine built not only for accuracy, but also for scale. Our clients are seeing influence across 50 – 80% of orders and return reductions of on average 35% in comparison to buyers who did not see size recommendation, because PRO is powered by two unique pillars that no other provider offers.
The difference comes from PRO’s two unique pillars, which no other provider offers:
- Zero Input Size Finder with 99% accuracy for returning shoppers without them lifting a finger.
- Advanced Quiz Based Engine. A powerful neural network for first-time shoppers that continuously learns from sales, returns, and even product-level variations, right down to color.
Most sizing tools stop at a quiz. Customers are asked to enter their height, weight, body shape, or previous sizes. That works for first-time shoppers, but what about the 40 – 60% of customers that already have bought from your store?
Prime AI’s Zero Input Size Finder solves this. Returning shoppers get a size recommendation without doing anything at all.
- We use past purchase history, returns, and real product-ID level data to instantly predict the right fit.
- Accuracy reaches 99%, validated on live customer datasets.
- The result: frictionless UX, higher trust, and dramatically fewer returns.
- No limitations to the number of brands or SKUs you have for sale.
This isn’t just a convenience it’s the key to covering enough of your transactions to change your overall KPIs.
While Prime AI’s sizing solution was built in the era of deep learning and is characterized by proprietary neural networks and adaptable AI architecture. It uses advanced deep learning models to analyze multiple data inputs, not only basic body measurements or user-provided info, but also each retailer’s product data and historical outcomes. Prime AI’s Clothing Size Finder employs neural networks to process shopper’s attributes alongside garment specifications (fit, materials, clasp etc.) yielding a personalized size recommendation for each item, even down to colour level, since sizing quite often differs at colour level. Importantly, Prime AI can incorporate additional data signals such product reviews. Prime AI’s ML pipeline is built to learn and improve continually, the Pro version of the solution can train itself on the retailer’s own inventory data, product compositions, customer reviews, sales and returns statistics to refine the accuracy further.
The PRO version of Prime AI introduces a two-pillar strategy for maximizing impact:
Zero Input Size Finder: No quiz, no user input. Automatically provides a recommendation based on past purchases, returns, and CRM data. Proven 99% accuracy for returning customers.
Quiz Based Size Finder: For new users, a smart quiz powered by a different AI engine and cross-learning from “zero-input” data. These systems work together, sharing insights, ensuring consistency, and improving coverage.
Together, these pillars influence more than 50% of a retailer’s transactions a critical threshold for achieving meaningful return reduction.
In essence, Prime AI brings a modern, adaptive AI that goes beyond static algorithms, it leverages deep learning on both body data and real commercial outcomes (returns, exchanges) to keep improving size predictions. This depth of machine learning integration gives Prime AI a more predictive and dynamic capability than Bold’s relatively self-contained digital twin model. Prime AI is described as a “cutting-edge AI” platform by industry observers, and it offers customization of the AI to each brand’s specific sizing nuances (more on that below).
Both platforms are rooted in AI, but Prime AI’s technology is newer and more adaptive. Bold Metrics relies on a robust but established ML model (digital twin generation from a fixed Q&A) perceived by some as behind the curve now. Prime AI employs state-of-the-art neural networks, continuous learning from data, and even optional computer vision, aligning with the latest AI trends to deliver a more flexible and forward-looking solution. For a premium retailer seeking the most sophisticated machine learning depth, Prime AI holds the edge in technical modernity.
Zero Input Size Finder The Future of Frictionless Sizing
Quiz Based Engine That Is Smarter Than Basic Size Finders
For new customers, quizzes are still important. But not all quizzes are equal.
Unlike form-fillers that rely only on height and weight, Prime AI’s quiz engine learns from real-world outcomes:
- Sales and refunds data
- Product attributes like material, cut, and fastening
- Shopper reviews and feedback
- Variations down to color level, because we know the same SKU can fit differently across colorways
This creates multiple, dynamic sizing models that adapt to your product catalog and get more accurate over time. Competitors stop at a static quiz Prime AI keeps learning.
Shopper Nudging that Prevents Refunds Before They Happen
Even the best size recommendation can be ignored if shoppers insist on choosing differently. That’s where Shopper Nudging comes in.
Our system actively warns customers when their choice doesn’t align with proven fit data e.g., “This style runs large, most shoppers like you sized down.”
This proactive guidance helps customers avoid costly mistakes, leading to higher confidence and significantly fewer returns. None of our competitors offer this.
Why Influence Rate Matters: 30% vs. 70% Coverage
To reduce refunds, a solution must affect more than half of all purchases. With quiz only systems, adoption rarely exceeds 30%. The impact on returns is negligible.
Prime AI Size Funder PRO routinely influences 50-80% of transactions by combining Zero Input for returning shoppers and Quiz Based for first buyers. That’s why retailers using our solution see measurable ROI:
- Return reduction: 35% reduction in size-related refunds
- Conversion uplift: 3-10% depending on price point
- Average order value increase: +15% as shoppers buy with more confidence
Built for Your Brand, Not as a Generic Plugin
Prime AI PRO is 100% customizable:
- Tailored back-end sizing logic for your product groups
- Customizable front-end UI to match your brand exactly
- Adjustable quiz questions to target category-specific challenges (e.g., “Will you wear a tie with this shirt?”)
- Integration with Salesforce, Magento, Shopify Plus, and beyond
This isn’t a one-size-fits-all plugin. It’s a custom-built solution designed around your unique catalog and business goals.
Ready to Move the Needle on Refunds?
If your current tool is only scratching the surface, it’s time to go beyond quizzes. Prime AI PRO’s Zero Input intelligence, adaptive quiz engine, and shopper nudging combine to deliver results no other provider can match.
That’s how we help retailers influence the majority of their sales and achieve meaningful improvements in return rates, conversion, and average order value.
👉 Request a demo today to see Clothing Size Finder PRO in action and learn how it can transform your sizing experience.
