Perfect for meal prep and storing leftovers it has several size options ranging from Φ 6 inch to Φ 9 inch. Each food storage plate is made from borosilicate glass with an airtight, leak-proof lid. It is safe to use in the freezer, refrigerator, microwave, oven and dishwasher.These products don't absorb odors and has high temperature resistant up to 400°C. All lids are BPA free and recyclable. They are eco-friendly and pretty.