A FoodSaver Food Preservation System is the best way to keep food fresh up to 5X longer** which, in turn, saves you up to $2700 a year* and reduces food waste. Once you experience the FoodSaver System you will immediately understand its advantages. So what is it? It's a system that includes vacuum seal bags, vacuum zipper bags and containers designed to work together with vacuum sealers for optimal performance. The system removes air from bags and creates an air-tight seal to lock in freshness and protect food from spoiling. Think about that!