What happens if I loose my freezer storage bag? Team Freeze Sleeve May 25, 2017 19:41 Updated Follow No worries! Just store it in a regular freezer bag. We also recommend double bagging using a freezer bag to ensure it does not get wet. Continue Shopping Related articles How long will my sleeve stay cold? How long will it take my sleeve to get cold? How long can my sleeve stay in the freezer? There is this plastic bag in my package... Do I need this? How long will my sleeve last? Comments 0 comments Please sign in to leave a comment.