CORE CORE 1 Thermal Sensor White, One Size

We might be able to adapt our training plan to the weather, but there's no moving race days or start times, so we train with the CORE Sensor to make sure we can perform at our best no matter the temp. As we train, this low-profile device monitors our core body temperature, showing us how much it rises with our effort. This way, we know how to train our body to adapt and can test how various cooling techniques work for our body.