Replace the strap on your heart rate monitor with this Soft Strap with Electrodes from Garmin. This strap is meant to replace the back portion of a separately available Garmin heart rate monitor-it does not contain the heart rate monitor module itself. The strap is equipped with skin electrodes that work with your heart rate monitor to wirelessly transmit your heart rate data to compatible devices for instant feedback on how hard you're working. The strap is made of a soft material designed to be worn comfortably and prevent chaffing. Additionally, it's adjustable, so it can be worn by anyone.