This package contains one pair of adult defibrillation pads for the Lifeline VIEW/ECG/PRO. , These Adult Defibrillation Pads are for adult use only (8 years or older). Pads should be stored connected to the AED. Extra pads can be stored in the available carrying case. Pad package has a two-year shelf life. Pads should be stored connected to the AED. Extra pads can be stored with the defibrillator.