How Prospecs and Perfitt Brought Personalized Running Shoes to Life with AI Foot Measurement
In sports footwear, fit is everything — not only for professional athletes but for everyone who wants to run, walk, and move comfortably every day. Yet for many customers, finding truly comfortable shoes has always been a challenge.
Some people have feet that are slightly different in size or width. Others experience discomfort because most mass-produced running shoes don’t match their unique foot shape, arch height, or cushioning needs.
As one of Korea’s most established and trusted sports brands, Prospecs wanted to change that. After years of R&D at its innovation center, the brand launched a new custom footwear service in late 2023: One-Spec — powered by Perfitt’s AI-based mobile foot measurement technology, PerfittMeasure.
🧠 The Vision: True Customization for Real Feet
Prospecs’ goal was simple but bold — to give every customer a pair of running or walking shoes that truly fit their feet.
To achieve this, they needed a precise, seamless, and mobile-friendly way for customers to measure their feet from home. That’s where PerfittMeasure came in.
📲 How the One-Spec Service Works
1️⃣ Customers visit the One-Spec website.
2️⃣ Using PerfittMeasure, they place their foot on an A4 sheet and take two guided photos — one from the top and one from the side — using their smartphone camera.
3️⃣ Within five seconds, Perfitt’s AI calculates the exact length and width (in millimeters) of both feet, determines whether the user has narrow, regular, or wide feet, and classifies foot shape into five categories — such as Greek, square, pointed, or hallux valgus types.
4️⃣ Customers then select their preferred cushioning level (soft, medium, firm) and arch height (low, medium, high).
Perfitt’s AI analyzes all this data to create a precise, real-scale foot model used by Prospecs’ manufacturing system to design customized running shoes and walking shoes.
⚙️ Meeting Prospecs’ Technical Requirements
To support this innovation, Perfitt had to meet demanding technical standards:
Foot length, width, and contours measured to 1 mm precision using only a smartphone.
A simple, guided process that anyone can complete in minutes.
Real-scale A4 outlines for customized last manufacturing.
Accurate toe-shape classification and symmetry mapping.
Thanks to years of AI development, Perfitt was ready.
From its consumer app used by 700,000 users and more than 3 million foot images analyzed, Perfitt had continuously refined its measurement accuracy and usability. By transforming millions of foot images through advanced AI re-learning, Perfitt achieved unmatched precision — perfectly aligning with Prospecs’ R&D expectations.
🏃 Results: Precision, Comfort, and Customer Delight
Since launch, One-Spec has seen consistent growth in custom shoe orders — but even more impressive are the heartfelt customer stories:
“It’s like rain after a long drought. I’ve never had shoes that truly fit both my feet — please keep this service alive!”
“My feet are slightly different sizes and quite wide, but this custom-made pair fits perfectly. I can finally walk and run without pain.”
These reactions prove that personalized footwear isn’t just about comfort — it’s about confidence, health, and freedom of movement.
💡 Shared Vision Between Prospecs and Perfitt
Perfitt’s mission has always been to help people achieve more in sport, work, and life through products that truly fit them.
Partnering with Prospecs made that mission tangible — combining craftsmanship, technology, and empathy into one powerful customer experience.
The success of One-Spec opens new doors for the future of personalized footwear:
Custom running and training shoes
Shoes designed for medical needs (hallux valgus, diabetic feet, etc.)
Custom-made insoles for comfort and recovery
Luxury bespoke footwear experiences
Fit isn’t just a technical measurement — it’s the foundation of human movement and self-expression.
Conclusion
Through PerfittMeasure, Prospecs has turned personalization into reality — merging AI precision with decades of sportswear expertise.
Together, the two brands are redefining what it means to “fit” in the era of digital craftsmanship.