I have tested this bag in detail, due to negative reports from other consumers, but I can only recommend this highly. After vacuuming the zippers must be only sealed and not just go about it, then they hold, as in my early as 2 weeks, excellent tight. Both the refrigerator and in the freezer. The same can I for example do not always determined by my great vacuum sealer. Therefore, highly recommended. Did that also cleaned after use and then dried again used, this also succeeded easily and quickly.
