Fold back the perforations and fold while the protective strip is still in place. Wear gloves and store clean tools in the bag. Don't overfill the bag. It is recommended to fill it 3/4 full. Be careful not to puncture the package with the tools. Remove excess air. Remove the strip from the sticker, fold over the perforation line and glue firmly to the plastic and paper. 【Sterilization Indicators】The sterilization pouches are suitable for steam and ETO sterilization. The ovals change color: they become black with steam sterilization and brown with ETO.