For the most accurate core body temperature measurements, CORE is worn on the chest. The chest strap is a convenient and reusable solution for wearing the CORE for extended duration. The strap is made of soft stretchable nylon that can be easily washed and reused. It is one-size-fits-all and can accommodate a range of sizes.
Please note that CORE data is only reliable when paired with heart rate data, so if you choose to use this strap instead of a HRM strap, make sure you are still getting HR data from a watch.
