The Better Home Borosilicate Glass Containers with Lid - Glass Lunch Box with Air Vent Lid, Kitchen Containers Set - Microwave & Freezer Safe, Leak Proof, Stackable Design, Set of 4 (Round) VERSATILE BOROSILICATE GLASS CONTAINER: Made from premium borosilicate glass, these containers are durable, heat-resistant, and safe for use in the microwave and dishwasher. The transparent borosilicate glass construction allows you to easily identify the contents without opening the container, saving you time and effort. SECURE PP-LID: Each container comes with a matching PP lid that provides an airtight and leak-proof seal ensuring that your food stays fresh for longer, making these containers ideal for storing a variety of items, including leftovers, meal preps, snacks, and more. MULTIPLE SIZES: Our set includes four rectangular containers in different sizes – 370ml, 520ml, 800ml, and 1100ml – catering to all your food storage needs. CONVENIENT AIR-VENT PLUG: The included air-vent plug allows for controlled steam release during microwaving, ensuring a mess-free and hassle-free heating experience. EASY CLEANING AND MAINTENANCE: These containers are dishwasher safe, allowing for effortless cleaning. They are also freezer and fridge safe, making it convenient to store and preserve leftovers or pre-prepared meals. STACKABLE AND AESTHETIC DESIGN: The stackable design saves valuable storage space in your kitchen cabinets or refrigerator, keeping your kitchen organized and clutter-free.The sleek design of these containers adds a touch of elegance to your kitchen while providing practical storage solutions.