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Understand Movement as it Actually Happens
Accurately capture real world ground reaction forces (GRFs) and turn them into actionable insights, no lab, force plates or treadmills required.
XO-SOLE: Authentic Movement. Authentic Data.
Many systems can measurement movement in theory, but only a few can measure it in real life. XO-SOLE is the first wearable solution to make lab-grade 3D ground reaction force data accessible in the field, clinic, or on the court. By capturing authentic movement where it actually happens, XO-SOLE helps you understand balance, loading, efficiency, and injury risk in real contexts, not in a controlled simulation.
Key Benefits
Real-world insights for real decisions.
Capture authentic movement data without relying on a lab or constrained trials.
A biomechanics lab you can wear
Portable, lightweight, and easy to use across environments, activities, and populations.
Data you can actually use
The XO-SOLE Dashboard transforms complex force data into clear, actionable insights, no manual interpretation required.
See the XO-SOLE in Action
Validation
Proven By Science
The XO-SOLE PRO has been carefully validated against gold-standard lab equipment, including instrumented treadmills and force plates, confirming its precision in measuring ground reaction forces. In a study of 63 participants, it demonstrated high accuracy and proved to be highly reliable for analyzing human movement in real-world settings.
Comparison
How We Stack Up
The XO-SOLE PRO was built to push past the limits of existing force sensing solutions. Compared to other insoles, the XO-SOLE PRO combines comfort, unmatched capability, and accuracy into one powerful platform.
Trust
Validated Performance. Trusted By Leaders.
Validated
Scientifically validated against gold-standard lab equipment
Trusted
Trusted and funded, in part, by the Department of Defense (DoD)
Powerful
Full 3D force measurement (mediolateral, anteroposterior, and vertical)
Smarter Insights. Instantly Delivered.
From setup to analysis, XO-SOLE PRO does the work for you. Capture accurate 3D GRF data in real time or onboard the insoles, then receive instant reports through the XO-SOLE Dashboard, powered by Smartfoam technology and machine learning.
Instead of manual calibration or complex post-processing, the XO-SOLE Dashboard measures key movement metrics like gait symmetry, loading patterns, and movement efficiency automatically. Whether you’re working in the lab, clinic, or field, XO-SOLE makes capturing and understanding complex movement simple, fast, and reliable.
View All Our Dashboard Metrics
GRF Metrics
Mediolateral Force
- Max Force
- Impulse
Anteroposterior Force
- Peak Brake Force
- Impulse Brake
- Peak Propulsion Force
- Impulse Propulsion
- Total Impulse
Vertical Force
- Impact Force
- Propulsion Force
- Midstance Force
- Impulse
- Loading Rate
- Unloading Rate
Kinematic Metrics
Dorsiflexion
- Angle during stance phase
- Angle at foot strike
Inversion
- Angle during stance phase
- Angle at foot strike
Ground Contact Time
Gait Asymmetry
Coming Soon
Kinematics:
Dorsiflexion
- Angle at toe-off
Inversion
- Angle at toe-off
Foot Progression
- Angle during stance phase
- Angle at heel strike
- Angle at toe-off
Stride Length
Foot Clearance
Velocity
Power
Total Distance
Interpretations/Applications of all metrics
Dynamic web dashboard
Want to learn more about GRF? Check out our blog post
What's Inside?
Inside the XO-SOLE
Engineered with XO-NANO’s patented Smartfoam, the XO-SOLE is built to capture real movement accurately and reliably. Each insole is built from a continuous layer of Smartfoam that captures forces across the entire foot, revealing exactly how and where load is being applied with every step.
As the Smartfoam compresses, force data is captured directly within the insole and combined with motion data from a built-in 9-axis IMU, which tracks acceleration, rotation, and direction. Together, these inputs are translated into a complete 3D GRF profile, giving you a clear picture of how the body interacts with the ground during real-world movement.
Every detail is designed for performance and usability: Bluetooth (BLE) connectivity for wireless data transfer, up to 14-hours of battery life, and a lightweight design under 100 grams, or 3.5 oz, per insole. Available in men’s sizes 4–18, the XO-SOLE offers lab-grade biomechanics without the lab, giving athletes, clinicians, and researchers freedom to measure movement anywhere.
See How the XO-SOLE Can Deliver Real-World Insights to You!
Applications
