Collection: Core

Core is an advanced wearable device for continuous monitoring of your body’s core temperature, providing you with data that you have never been able to measure directly in a non-invasive solution before. The Core Sensor sets a new standard in physical performance analysis by offering real-time measurement of both core body temperature and skin temperature. Unlike traditional methods such as e-pills or invasive thermometers, Core operates completely externally and comfortably, typically by being worn on the chest on a heart rate monitor or secured with medical patches. It combines a miniaturized thermal energy transfer sensor with an AI-powered algorithm that interprets the heat flow between the body and its surroundings to calculate your actual core temperature with medical-grade precision.

This constant and accurate temperature measurement is important because your core temperature has a direct impact on performance and achievement during training and competition. When the body works hard, muscles generate heat, and if core temperature rises too much, the body will redirect blood from the muscles to the skin to cool itself, which can lead to a decrease in both power and pace. The Core Sensor helps you understand this thermal response in real time, so you can make decisions about pacing, cooling and intensity based on concrete data, not guesswork.

The Core Sensor is more than a measurement tool: it’s a training tool. By integrating Core into your routine, you can begin working on heat training – a proven method for improving the body’s tolerance and performance in hot conditions. Heat training has been shown to increase hemoglobin levels, VO2max and blood plasma in athletes, potentially improving both speed and endurance in competition. With the Core Sensor, you can monitor when your core temperature reaches your individual heat training zone, so you can train effectively and safely without exceeding limits that would reduce your performance.

This strategy makes the Core Sensor particularly valuable for triathletes, cyclists, runners and other endurance athletes who often compete in hot environments. By using Core data to plan rest intervals, hydration breaks and cooling strategies, you can keep your core temperature under control on race day, which can give you a clear advantage – especially on longer races and in extreme temperature conditions.

One of the great advantages of the Core Sensor is its ability to integrate with existing training platforms and equipment. The device communicates via ANT+ or Bluetooth, allowing core temperature data to be displayed live on compatible devices such as Garmin, Wahoo or COROS watches and cycling computers. This makes it easy to see your core body temperature alongside other training data such as heart rate, pace and power, without the need for a separate screen or app.

Data is stored both directly on the sensor and synced with the Core app, where you can analyze your historical temperature data and see how your thermal response changes over time. Easy access to these trends allows you to make long-term comparisons, adjust training plans, and evaluate the effectiveness of your heat training programs. The Core Sensor can therefore serve as a valuable part of an overall training strategy, using thermal data to make smarter decisions both on and off the training field.

Using the Core Sensor is simple: you place the sensor on your torso – either on a heart rate monitor, sports bra or with medical patches – and make sure it sits close to your skin for the most accurate measurements. A single charge can provide up to several days of continuous measurement, allowing you to monitor both training, recovery and daily temperature patterns.

This continuous monitoring means you get data not only during training sessions, but also during daily activities, rest and sleep, which can provide insight into the body's overall thermal profile and health. To get the most out of the Core Sensor, it is often recommended to combine temperature measurements with a heart rate monitor, as this can improve accuracy during athletic stress.