Muscle oxygen sensors...
More precise than heart rate
Easier than a blood test
VISION
A precision endurance training tool
Power and pace show what you're doing but not what it's costing you. Heart rate lags behind effort. Blood tests are invasive. Our muscle oxygen sensor gives you real-time insights into your body’s true performance—right when you need it.
Save time and make the most of your training.
FOR ATHLETES
Train smarter, not harder. Know exactly when to push and when to recover for peak performance.
FOR COACHES
Take the guesswork out of training. Personalize intensity and optimize performance for every athlete.
OUR PRODUCT
No pricks, no lab visits—just seamless, real-time tracking of your LT1 and LT2. Our sensor unlocks precision training with effortless, always-on lactate threshold detection. Incredible power, packed into a wearable device.
Continuous, noninvasive lactate threshold monitoring
IT'S ALL ABOUT FLOW
Optimize every workout, training block, and race
From daily sessions to race day, our technology helps you hit the perfect intensity for peak results.
COLLABORATION
Our Industry Partners
Our Data
Our Data
42,454
Workouts
1,400,982
Workout Minutes
LOVE FOR EIR
Meet our Athletes
Our success is driven by collaboration with elite athletes across triathlon, cycling, running, and other endurance sports, ensuring our technology meets the highest performance standards. Their insights help us refine our muscle oxygen sensor and AI coaching to deliver pro-level training for all.
TRIATHLON
SIMON
WHITFIELD
A legendary triathlete, Olympic gold medalist, and multiple-time champion who redefined endurance racing with his grit, speed, and relentless pursuit of excellence.
SPEED SKATING
VIKTOR
THORUP
A world-class speed skater and Olympian, known for his exceptional endurance, tactical brilliance, and record-breaking performances on the ice.
CYCLING
LUCAS
EUSER
A pro cyclist who competed at the highest levels of the sport, known for his climbing prowess, resilience, and deep understanding of endurance performance.
