Philips HeartStart FRx AED Standard Carry Case Single Clinic Pump Set it utilizes ActiveCell technology so For use in cushioning it utilizes ActiveCell technology so mobile patients will not have to worry about compromising their seal when they move around Filters should be replaced as necessary when they begins to appear worn or degraded The Philips HeartStart FRx AED Standard Carry Case is made of wipeable urethane was designed to hold the FRx defibrillator as well as its main accessories and supplies The carrying case is intended for use in environments where the defibrillator is protected from moisture and harsh treatment