- Set of 4 Food Storage Containers: This versatile pack includes two square containers (350ml and 500ml) and two round containers (350ml and 500ml) to meet your various food storage needs. - Safe and Durable Material: Each container is constructed from high-quality, BPA-free food-grade silicone. This material is soft, non-toxic, and unbreakable, ensuring safe and reliable food storage. - Airtight Seal for Freshness: The innovative snap buckles and vent valve create an airtight environment to keep food fresh and protect it from dust. These features enhance the longevity of your stored items. - Space-Saving Design: These collapsible containers can be easily folded down to save approximately 50% of storage space, making them ideal for kitchens with limited room. - Multi-Functional Use: Perfect for a variety of situations, these containers can store cereal, fruits, vegetables, and leftovers in the fridge. They also serve as lunch boxes for office workers and are convenient for meals during travel or camping. - Microwave, Freezer, and Dishwasher Safe: With a temperature tolerance of -4°F to 428°F (-20°C to 220°C), these containers are safe for use in the microwave, freezer, and dishwasher. Important: Always pull up the air vent valve on the lid or remove the plug before heating. With these features, our collapsible food storage containers provide a reliable solution for storing, preserving, and transporting food effectively.