It depends. If you are keeping the smoothie bowl in the Ninja pint container with the lid sealed tightly and are freezing it in a cold freezer (between 9 degrees F and -7 degrees F), your smoothie bowl will keep for several weeks, even months. However, if you transfer your smoothie bowl to another container or freeze it in a freezer that is not quite as cold (or that is accessed a lot/door opened and closed often), the lifetime of your smoothie bowl will decrease greatly to just a few days and you will likely end up with a freezer-burned smoothie bowl.