LONGER FOOD FRESHNESS- Preserve food freshness up to 4 times longer with airtight seals that lock in the flavor and quality of your food. Comes with 1 connector for vacuum machines. MATERIAL & USE- Container is 100% GLASS. Can be used in the refrigerator and in the freezer. Can be used in the microwave and in the oven without the lid. SAVE MONEY- By preserving the freshness of your food, you can significantly reduce food waste, which in turn helps you save a substantial amount of money on your weekly shopping expenses. DURABLE AIRTIGHT PRESEVATION- A robust vacuum seal guarantees the preservation of freshness, flavor, and eliminates any unwanted odors, securing the quality of your food. MARINATE FUNCTION- Infuse delectable flavors into meat, fish, and vegetables effortlessly, providing a time-efficient and energy-saving solution for your kitchen.