These round airtight food storage containers are amazing! Made from high grade stainless steel with a silicone gasket in the lid they are completely air-tight and will last a lifetime. Once you try one of these plastic free containers you will never want to use anything else! Writing on the top of the container with a non-permanent marker (such as this plastic free ) is a great way to keep track of what is inside and make sure your food does not go to waste in the fridge! The multiple sizes make it an ideal container for anything from baby food, snacks, storing leftovers and packing lunches!