Food container material: Food-safe 304 stainless steel, the perfect choice for those who value harmony and order in the kitchen. It is the perfect choice when we need to transport groceries. It protects the food inside and prolongs its freshness. Versatile: This container set is suitable for almost all food and snacks. You can successfully transport soups, meat, sandwiches, fruit, vegetables, breakfast cereal or nuts in it. The set is extremely robust, airtight, odorless and versatile. With its high-quality stainless steel, it is resistant to food acids and is therefore ideal for preparing sauces or vinaigrettes, for curing meat and for hygienically storing sensitive food. It is also possible to place food that needs to be chilled in the container before putting it in the fridge, creating a perfect barrier against odors from other foods. Container: Each container is equipped with a silicone mat and is perfectly insulated against air. As a result, the content always remains firm and fresh for longer. The boxes can be stacked on top of each other to save space. They can even be cleaned in the dishwasher. They are suitable for freezing. Design: Each tin has a pattern with the date written on it and an air-permeable valve in the middle of the lid. The vent valve allows air to be locked in or deflated at the touch of a button, making it easy to use and no more fuss.