The present invention disclsoes a method of packaging pre-filled medical devices. The method comprises the steps of: producing a packaging having a front panel and a back panel defining a compartmentcapable of holding one or more medical devices wherein at least one of the front panel or top panel has a portion containing a gas permeable material while the remaining portion of the pouch is gas impermeable. This gas permeable material allows gas to pass through the material and contact the one or more articles contained within the compartment or allows gas to pass through the gas permeable material from the inside of the compartment to the outside of the container. Upon completion of sterilization, the pouch is sealed and the gas permeable portion is cut away leaving the sterilized medicaldevice enclosed in a completely gas impermeable pouch.