The vacuum bag or the sous vide bag should be compatible with the vacuum sealer and should be designed for the size of the vacuum sealer. It must have a structured surface, be free from BPA and other harmful substances, be tasteless and odorless, cookproof, tear-proof, microwave safe, suitable for the freezer, and in the best case, reusable. If you want to vacuum seal effectively and successfully, you shouldn't skimp on the film or the right bags. Some people achieve success with conventional freezer bags or inexpensive vacuum packaging. However, using the manufacturer's products often pays off as they are easier to handle and the food lasts longer.