3. Internal structure, built-in cutting knife, for opening, sealing, air extraction/home storage 4. One Touch Lock, Fresh Ingredients, Stayed Fresh 2. The high-quality inner core has great power and can maintain the high suction power of the vacuum pump for a long time. Features: 1. One to seal, one press to vacuum, the food will be light and delicious, and the freshness will be fixed 5. The food will not smell when going through the refrigerator. This is a visible and practical solution to the problem of odors in the refrigerator.