With these vacuum storage boxes (or fresh food trays) you can store food much longer (up to 5-7x). You connect the vacuum holding box to your vacuum machine through a suitable vacuum hose and then suck all the air out of the vacuum bin. This gives bacteria less chance and your food will last longer. Useful for soups and marinades, but also for every other conceivable food. Please note: Foodsaver food containers are only suitable for Foodsaver vacuum machines.