ZOLL AED3 Trainer CPR Replacement Gel Pads - Green (ZOL8028000012) EachReplacement Gel Pads for AED 3 Training Pads support continued CPR training with the ZOLL AED 3 Trainer. They allow trainees to work with Real CPR Help and receive real time feedback on compression quality using the Trainer (not included). Using the gel pads along with the trainer also gives them practice in attaching the electrodes so they can be true to the lifesaving process during simulations. General Information Manufacturer: ZOLL Medical