Meet OMbra from OMsignal: a smart bra that helps you become a better runner by monitoring your heart and breathing rate. It has sensors built into its fabric to deliver accurate results and insights to help you push your body the right way. It streams data to your phone via Bluetooth.
By determining your personal thresholds, the companion app can guide you to the right training zone to maximize your workouts and reduce chance of injury. More information is available here.