Food, water, and other items in your More Prepared emergency survival kit have a shelf life of 5 years. Each kit is stamped with a "Best By" date to inform you when the items are close to expiration. We will send you an email when it is time to replace these items, which you can easily do with the following replenishment kits! We offer a variety of sizes online, but don't hesitate to contact us if you have a custom request.