Depends upon how long they have been sitting around before you repackaged them. It also depends upon what they have been exposed to (sunlight, heat, freezing, etc.). Gloves are cheap, and are intended to protect YOU, so replace them often. Since I use mine about once a month, they get replaced about once a month. Use the old gloves when working on your car, cleaning a knife or firearm, painting, cleaning the bathroom, etc.