Beets BLU Extender for Heart Rate Monitor Replacement Strap BBHRS1 (up to XXXL)
Extender adds 10" (25 cm) to any of suitable heart rate monitor strap length. List of supported HRM straps: - Beets BLU HRM Replacement Strap (BBHRMS1) - Polar H7 and H6 HRM Strap - Zephyr HxM Smart HRM Strap - Runtastic Combo HRM Strap