This high quality hard-sided, watertight carrying case protects your Philips AED in the most rugged and adverse conditions. It was designed to fit the Philips HeartStart OnSite, FRx, and FR2+ models. Open the lid and you'll see die cut inserts to fit extra electrode pads and battery. Carrying case protects your Philips AED in the most rugged and adverse conditions | High quality hard-sided | Watertight | Designed to fit the Philips HeartStart OnSite, FRx, and FR2+ models | Inserts to fit extra electrode pads and battery