This package contains one pair of pediatric defibrillation pads for use with the Lifeline AED 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. These pads enable the Lifeline AED to be used with children under the age of 8. They reduce the energy delivered by the AED to 50 Joules (from 15) and are slightly smaller than the DDP-100 pads to accommodate smaller victims