-Glass Food Storage Containers for Everything -Space Saving Stackable Design: Designed to minimize space, our containers are stackable and will easily fit into your refrigerator, freezer or cupboard to effortlessly organize your kitchen. -Airtight Containers For Fresher Food: The airtight silicone seal and secure hinge clips means you can use them for a food container without odors and air, getting in or out! They're also leakproof glass lunch containers.