Signature glass containers are made from high quality borosilicate glass, which can be used for storage, cooking and microwaving. All glass containers are FDA approved and BPA-Free. This food storage container set includes 4 glass containers of varying sizes and 4 matching lids. This is the perfect solution to store all of your prepared meals, snacks, and leftovers. Glass Food Containers use FDA approved materials, are BPA Free, and are made out of borosilicate glass for easy heating and durability. They're a great size for meal prepping and leftovers for the whole family! Oven, microwave, fridge, dishwasher, freezer safe.