TOP 20 AI-POWERED SIZE RECOMMENDATION PERFORMANCE STATISTICS 2025

When I first started looking into AI-powered size recommendation performance statistics, I honestly didn’t expect the numbers to be so game-changing. It’s kind of like when you finally find that perfect pair of socks — the ones that fit just right and make you wonder how you ever settled for less. These AI sizing tools are doing the same thing for online shopping, removing the guesswork and giving customers more confidence to click “buy.” From higher conversions to fewer returns, the results speak for themselves. As someone who’s seen plenty of trends come and go, I can tell you this one isn’t just hype — it’s reshaping the way we shop.

Top 20 AI-Powered Size Recommendation Performance Statistics 2025 (Editor’s Choice)

Top 20 AI-Powered Size Recommendation Performance Statistics 2025

Ai-Powered Size Recommendation Performance Statistics#1 Mammut Conversion Rate Increased By 22%

Mammut’s integration of Fit Analytics’ Fit Finder led to a notable 22% boost in conversion rates. This improvement came from helping shoppers confidently choose the right size without trial and error. Reducing sizing uncertainty meant more customers completed their purchases. The streamlined shopping process created a more satisfying user experience. Over time, such improvements contribute to stronger brand loyalty and higher revenue.

 

 

AI-Powered Size Recommendation Performance Statistics#2 Mammut Return Rate Reduced By 20%

By guiding shoppers to their optimal size, Mammut saw returns fall by 20%. Fewer returns meant lower operational costs and less strain on customer service. Customers benefited from receiving products that fit as expected the first time. This reduction also positively impacted sustainability by minimizing reverse logistics. Overall, the result was a win for both the business and the environment.

 

AI-Powered Size Recommendation Performance Statistics#3 Foot Locker EU Return Rate Reduced By 13.5%

Foot Locker EU’s use of Fit Finder brought a 13.5% drop in returns. The AI tool accounted for body measurements, brand-specific sizing, and past purchase data. This meant customers were less likely to order multiple sizes for comparison. The brand enjoyed better inventory management and fewer unsold returns. The savings and efficiency gains also helped Foot Locker reinvest in growth strategies.

 

 

AI-Powered Size Recommendation Performance Statistics#4 Foot Locker EU Conversion Rate Increased By 3.5%

Alongside reducing returns, Foot Locker EU experienced a 3.5% lift in conversions. The convenience of accurate sizing created more buying confidence. Customers appreciated the smooth experience, from browsing to checkout. These improvements demonstrated that fit technology impacts both sales and satisfaction. Even small percentage gains in conversion can represent significant revenue for large retailers.

 

AI-Powered Size Recommendation Performance Statistics#5 Simons Revenue Per Visitor Increased By 10%

Canadian retailer Simons saw a 10% increase in revenue per visitor after implementing Fit Finder. The AI sizing tool encouraged higher-value purchases by reducing hesitation. Customers were more likely to add items to their cart knowing they would fit. This also led to fewer abandoned carts. Overall, the technology helped maximize the value of every site visit.

 

AI-Powered Size Recommendation Performance Statistics#6 Simons Conversion Rate Increased By 2%

The introduction of Fit Finder gave Simons a modest but valuable 2% rise in conversions. Although smaller than some other cases, this boost still represented measurable growth. Accurate sizing meant fewer customer doubts, especially for online-only purchases. Over time, such gains compound into substantial revenue. It also reinforced Simons’ commitment to customer satisfaction.

 

 

AI-Powered Size Recommendation Performance Statistics#7 The Iconic Conversion Rate Increased By 1% (A/B Test)

The Iconic’s A/B testing showed a 1% increase in conversions after deploying Fit Finder. While modest, this lift proved that even incremental changes can yield strong results at scale. The technology created a more personalized shopping journey. Customers could skip the uncertainty of guessing their size. This consistent experience helped drive better engagement and trust in the brand.

AI-Powered Size Recommendation Performance Statistics#8 The Iconic Revenue After Returns Increased By 6%

By reducing returns, The Iconic achieved a 6% increase in net revenue after returns. This figure reflects both fewer refunds and more satisfied customers. AI sizing tools helped ensure shoppers kept more of their purchases. Reduced returns also meant better inventory turnover. Over time, the savings and increased revenue compounded to strengthen overall profitability.

 

AI-Powered Size Recommendation Performance Statistics#9 Weird Fish Conversion Rate Increased By 8%

Weird Fish reported an 8% increase in conversion rates after introducing Fit Finder. Customers gained more confidence in their selections, leading to faster purchasing decisions. The tool made the shopping experience more intuitive and efficient. This translated into higher sales without needing deep discounts. Such improvements also enhanced the brand’s image as a customer-friendly retailer.

 

 

AI-Powered Size Recommendation Performance Statistics#10 Ridestore Conversion Rate Increased By 4%

Ridestore experienced a 4% lift in conversions thanks to Fit Finder’s recommendations. The increase stemmed from fewer size-related hesitations at checkout. Customers could shop with greater certainty and less risk. This resulted in improved sales performance across multiple product categories. The retailer also saw stronger repeat purchase behavior from satisfied customers.

 

AI-Powered Size Recommendation Performance Statistics#11 Ridestore Value Per Visitor Increased By 9%

Alongside higher conversions, Ridestore saw a 9% boost in value per visitor. Customers tended to purchase more when confident about fit. The technology allowed the brand to maintain full-price sales by reducing returns. This improvement had a direct impact on profitability. Over time, this metric indicated the long-term value of sizing accuracy.

 

AI-Powered Size Recommendation Performance Statistics#12 Snipes Size Sampling Reduced By 8%

Snipes reduced size sampling by 8% using AI-powered fit recommendations. Customers were less likely to order multiple sizes “just in case.” This reduced operational strain from processing returns. It also meant a more efficient and eco-friendly shipping cycle. For the retailer, fewer returns meant higher margins and better customer relationships.

 

AI-Powered Size Recommendation Performance Statistics#13 Amaro Return Rate Reduced By 4%

Brazilian retailer Amaro achieved a 4% drop in returns after implementing Fit Finder. Even small decreases in returns can save substantial costs. The AI-driven approach ensured better first-time fit for customers. This improved overall satisfaction and reduced friction in the buying process. Over time, such improvements lead to higher loyalty rates.

 

AI-Powered Size Recommendation Performance Statistics#14 Alpha Industries Conversion Rate Increased By 5.7%

Alpha Industries’ use of Fit Finder drove a 5.7% conversion rate lift. More customers completed purchases with accurate sizing guidance. The brand could maintain fewer markdowns while increasing sales. Customers benefited from a shopping experience that felt more personalized. This helped strengthen Alpha Industries’ position in a competitive market.

 

AI-Powered Size Recommendation Performance Statistics#15 Moosejaw Return Rate Reduced By 24%

Outdoor retailer Moosejaw saw returns fall by 24% with True Fit integration. The AI solution reduced the guesswork in size selection. Customers enjoyed more accurate orders and fewer disappointments. Lower returns saved on logistics and restocking. These benefits contributed to a more efficient and profitable operation.

 

AI-Powered Size Recommendation Performance Statistics#16 PacSun Conversion Rate Increased By 100%

PacSun doubled its conversion rate after implementing True Fit. This dramatic lift showed the transformative potential of AI fit technology. Customers quickly found their correct sizes, encouraging faster purchases. The technology removed a major friction point in online shopping. Such results highlight why sizing tools are becoming standard in e-commerce.

 

AI-Powered Size Recommendation Performance Statistics#17 Under Armour Size-Based Returns Reduced By 27%

Under Armour reduced size-related returns by 27% using Virtusize. The tool analyzed product dimensions and customer profiles for optimal fit. This change minimized costly return cycles. Customers appreciated getting gear that fit perfectly on arrival. The improvement also supported the brand’s sustainability goals.

 

AI-Powered Size Recommendation Performance Statistics#18 Boyish Jeans Returns Reduced By 31%

Boyish Jeans cut returns by 31% with the MySizeID solution. The tool’s mobile-friendly sizing widget simplified fit selection. Fewer returns meant better profit margins and happier customers. The enhanced accuracy boosted customer trust in the brand. Over time, these benefits reinforced repeat purchases.

 

AI-Powered Size Recommendation Performance Statistics#19 Penti Online Apparel Sales Tripled For MySizeID Users

Turkish retailer Penti saw online apparel sales triple among MySizeID users. These customers also returned 50% fewer items during the review period. The dramatic growth underscored how correct sizing encourages confident buying. AI tools reduced fit-related doubts and checkout abandonment. This growth also strengthened Penti’s competitive advantage in e-commerce.

 

AI-Powered Size Recommendation Performance Statistics#20 1822 Denim Conversions Increased 4× With 3DLOOK YourFit

1822 Denim achieved a fourfold increase in conversions using 3DLOOK’s YourFit. The smartphone-based scan gave highly personalized size recommendations. This made online denim shopping less risky and more enjoyable. The result was higher sales and fewer returns. Customers also reported greater satisfaction with their purchases.

 

Conclusion – Why AI Sizing Tools Are Stepping Up Retail’s Game

After seeing the results in these 20 examples, it’s clear that AI-powered sizing isn’t just a nice-to-have—it’s a competitive edge. Retailers using these tools are improving customer satisfaction, cutting down on costly returns, and ultimately making online shopping less of a gamble. It’s not just about numbers; it’s about building trust, which in turn keeps people coming back. Just like slipping on those perfect socks that feel like they were made for you, AI-powered sizing gives shoppers that same “this is right” moment. In a crowded market, that kind of certainty is priceless.

SOURCES

https://fitanalytics.com/case-studies/mammut

https://fitanalytics.com/case-studies/footlocker-eu

https://www.virtusize.com/articles/vs-case-study-underarmour-en

https://mysizeid.com/reports/mysize-launches-two-new-features-for-mysizeid-widget-decreases-customer-returns-31-in-boyish-jeans-case-study