[Problem to be solved] An object of the present invention is to provide a novel
package having a medical rubber product stored therein and capable of keeping the
oxygen therein at a predetermined concentration or lower. Another object of the present invention is to make it possible to visually confirm the
oxygen concentration in the
package, thereby facilitating
quality assurance by sterilization treatment. [Solution to solve problem] The present invention is a
package having a medical rubber product sealed therein, wherein the package is formed of an
oxygen impermeable packaging material and has a first space section and a second space section, the first space section has the medical rubber product stored therein, the second space section has an oxygen detecting agent stored therein, the oxygen detecting agent changes a
color tone depending upon an oxygen concentration, and the first space section and the second space section are divided by an oxygen permeable divider.