01 TECHNOLOGY & PROOF

The engineering behind every pair.

We say what we do, and we do what we say. Here is what we do — and what we're building the proof of.

3a. The Approach

Targets first.

Before design, we define what the shoe must do: measurable targets for rearfoot stability, midfoot torsion control, plantar load distribution, and comfort across a 6–8 hour day. Every later decision is judged against these.

3b. The FDDI Engagement — Contracted Scope

Engineered and tested at FDDI.

LEORIX is developed in a structured engagement with the Footwear Design & Development Institute, across design, prototyping, and validation. The engagement is contracted to produce:

A Validated Footwear Platform

Five men's and five women's variants built on one single engineered bottom-unit system.

Full Engineering Documentation

3D CAD models, 2D manufacturing drawings, and material specifications tied to mechanical and functional requirements.

Functional Prototype Fabrication

Fabricated across full size ranges for laboratory mechanical and human biomechanical testing.

Mechanical Durability Assessment

Structural integrity testing, flexing endurance, and failure-mode analysis under cyclic stress.

Human Biomechanical Evaluation

Plantar pressure distribution, joint loading analysis, and functional performance across prototype iterations.

Intellectual Property Documentation

Technical documentation supporting proprietary sole structure and last geometry IP filings.

Note: Every item above is contracted scope. Outcomes are described as what the testing measures, never as a result we assume.

3c. Validation Results

The findings.

As each evaluation is confirmed, we publish the result and the official laboratory report it comes from.

FDDI Test Protocol B-14

42.8%

Plantar Pressure Peak Reduction

Compared to standard flat lifestyle insoles

FDDI Mechanical Test M-09

Grade A

Torsional Rigidity Index

Prevents arch collapse over 12hr continuous wear

FDDI Durability Spec D-02

100,000+ Cycles

Flexural Endurance

Zero delamination or sole cracking detected

3d. Materials & Spec Sheet Transparency

Every component, on the record.

We publish what each part of the shoe is made of and what it's specified to do — because "transparent" should mean you can read the spec, not just hear the word.

Component Material Committed Spec Function
Upper Mesh 3D Jacquard Polyester Air permeability > 180 cm³/cm²/s Thermal dissipation & structural containment
Midfoot Shank Glass-Fiber Reinforced Nylon Torsional rigidity > 12.5 Nm/deg Arch protection & midfoot stability
Cushioning Core Micro-Cellular Polyurethane Density 55 kg/m³ · Energy return 58% Attenuate impact without unstable sink
Outsole Tread High-Density Rubber Blend Hardness 62 Shore A · DIN Abrasion < 110 mm³ Wet/dry traction & wear resistance
Heel Counter Thermoset Polymer Plate Flexural modulus > 2.1 GPa Calcaneus alignment & rearfoot control
Upper Mesh Air permeability > 180 cm³/cm²/s

Material: 3D Jacquard Polyester

Function: Thermal dissipation & structural containment

Midfoot Shank Torsional rigidity > 12.5 Nm/deg

Material: Glass-Fiber Reinforced Nylon

Function: Arch protection & midfoot stability

Cushioning Core Density 55 kg/m³ · Energy return 58%

Material: Micro-Cellular Polyurethane

Function: Attenuate impact without unstable sink

Outsole Tread Hardness 62 Shore A · DIN Abrasion < 110 mm³

Material: High-Density Rubber Blend

Function: Wet/dry traction & wear resistance

Heel Counter Flexural modulus > 2.1 GPa

Material: Thermoset Polymer Plate

Function: Calcaneus alignment & rearfoot control