Cardinal Health™ Paper Sterilization Pouch combines a blue film and a medical grade paper to provide breathability, sterile barrier, and indication of processing. Each pouch includes an external process indicator for Steam and Ethylene Oxide (EO) Gas sterilization. You have the choice to seal the pouch yourself or mechanically with a heat sealer. To assist opening, a convenient thumb notch is positioned at the top of the pouch, above the chevron seal.