Saving money in the form of a postal money order, any cons

I want to give a gift to someone, a postal money order so they can save it when they need it. if they save it for a long time can it expire? is there any cons (pro and cons) to saving a postal money order?
      Answer1:Now, we have some excellent Insurance policies. If you invest one time a lump sum the insurance company pays six time if any death happens before the expiry of the policy. you can contact any State Bank in your nearest area. They can guide you better. This investment would be more helpful than postal certificates.
      Answer2:If you belong to an auto club, you can get travelers check. They never expire. If you do not belong, the fee is only 1%.