FOOD STORAGE SOLUTION- The 5 reusable glass containers are ideal for storing food, lunches, meal prep, or keeping snacks handy! The included snap lids help keep your food fresher, and make the bowls easily portable.MULTIPURPOSE- More than just storage, these bowls are ideal kitchen accessories and can be used to mix and prep ingredients while cooking or baking. The bowls have black snap on lids for serving or taking them to an event or party.SAFE MATERIALS- This set contains food grade polypropylene bowls that are microwave and dishwasher safe. Glass bowls provide safer alternative to traditional plastic food storage options as they do not leak harmful chemicals when in contact with food.SPACE EFFICIENT- Each container in this set can rest inside each other when not in use for simple and effective storage. Nesting bowls utilize minimal cabinet or drawer space and make it easier to find the correct bowl size and lid that you need!PRODUCT DETAILS- Material-glass with food grade polypropylene plastic lids. Set Includes 5 Glass Bowls and 5 Black Lids. One Bowl of Each Size with Lid - 4 ounce, 6 ounce, 12 ounce, 14 ounce, 28 ounce.