Amazon.com: Mchoi Hard Carrying Case Fits for Heart Rate Monitor, Compatible with Garmin HRM-Pro/HRM-Tri Heart Rate Monitor Chest Strap, Case Only : Sports & Outdoors
Amazon.com: Compatible with Garmin HRM-Pro/HRM-Tri/HRM-Run/HRM-Dual Heart Rate Monitor Silicone Waterproof Case with Carabiner : Sports & Outdoors