The shelf life of pretzels produced by Keystone Pretzel Bakery can vary based on a few factors, such as the specific type of pretzel and the storage conditions. In general, when kept in a cool, dry place and sealed in an airtight container, Keystone pretzels may remain fresh for several weeks, typically around two to four weeks. However, if you are looking for the exact shelf life for a particular product, it is advisable to check the packaging for any specific date codes or guidelines. The freshness may also be influenced by the ingredients used. For the most accurate information, it is always a good idea to refer to the official Keystone Pretzel Bakery website, where you may find more detailed information regarding product shelf life and storage recommendations.