Perfect for many occasions: Silicone collapsible containers are ideal for indoor food storage such as homes, bars, restaurants, but also outdoor activities such as offices, picnics, companies, camping, hiking, traveling, etc., and can be placed in ovens, refrigerators, and dishwashers. Portable folding container, light weight and easy to carry. Valve design: hot gases can be vented, no water vapor is formed in the container. Therefore, it is not suitable for liquids such as water and soups that may leak from the valve. When using a vent valve, it needs to be pulled up. Health and safety: The container is made of high-quality food-grade stainless steel, which is safer than general plastic materials. Suitable for refrigerators, safe and worry-free. High-quality material: The bento box is made of 304 stainless steel and food-grade PP material, which is healthy and durable. We use thicker materials that do not break easily. The top and bottom are very firm. The handle on the lid of the container can be used as a phone holder. Three sizes are available: single-layer capacity: 1000 ml, double-layer capacity: 1700 ml, triple layer capacity: 2400 ml. 3-tier stackable container set with lid: you can freely combine them into 1-, 2-, or 3-tier containers for easy storage of different quantities of food; A portable container perfect for adults working, exercising, camping, and traveling. Perfect for many occasions: Silicone collapsible containers are ideal for indoor food storage such as homes, bars, restaurants, but also outdoor activities such as offices, picnics, companies, camping, hiking, traveling, etc., and can be placed in ovens, refrigerators, and dishwashers. Portable folding container, light weight and easy to carry. Valve design: hot gases can be vented, no water vapor is formed in the container. Therefore, it is not suitable for liquids such as water and soups that may leak from the valve. When using a vent valve, it needs to be pulled up. Health and safety: The container is made of high-quality food-grade stainless steel, which is safer than general plastic materials. Suitable for refrigerators, safe and worry-free. High-quality material: The bento box is made of 304 stainless steel and food-grade PP material, which is healthy and durable. We use thicker materials that do not break easily. The top and bottom are very firm. The handle on the lid of the container can be used as a phone holder.