Upgrade your training programme with the Garmin Soft Strap Premium Heart Rate Monitor.When worn around your chest during an activity, it wirelessly transmits your heart rate to your compatible device for instant feedback on how hard you're working. The strap is made of a soft fabric for more comfort. The size is adjustable to your body so it stays secure during your activity. Once it's paired with your compatible device the first time, it will automatically recognise it each time. And it's optimized for use in crowded areas like the gym and road races, so it won't pick up any signals but your own.