Defibtech Lifeline AED Adult Electrodes contains one pair of adult defibrillation pads for use with the Defibtech Lifeline AED and the Defibtech Lifeline AUTO AED.  These pads are for adult use only (8 years or older) and 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