Glass Food Storage Containers: These glass food storage containers are perfect for storing and reheating leftovers. The set includes various sizes of containers with matching lids. The containers are made of durable borosilicate glass, which is oven-safe and resistant to thermal shock. The lids have airtight seals, keeping your food fresh and preventing leaks. The packaging features a label with the text Glass Food Storage Containers and a graphic of a microwave.