Our most popular accessory comes highly recommended. Simply insert the practice pads cartridge in your HeartStart Home Defibrillator and demonstrate HeartStart?s ease of use to your friends and family.  When installed in HeartStart, these special-purpose, reusable pads suspend its ability to deliver a shock and activate its training mode. A reusable practice mat comes with the pads. HeartStart's voice instructions, including CPR coaching, let you treat a simulated patient and be better prepared to help rescue a SCA victim.