【Airtight and interchangeable lids】These Prep Naturals Glass Food Storage Containers feature the easy locking, airtight and interchangeable lids, these premium food containers are both leakproof and aesthetically beautiful.Microwave safe but not oven safe.Each container lid also features an air vent for microwave use. Leave the air vent open while microwaving,and make it easy to open when storage hot food. 【Keep food fresh】Our leakproof lids keep your food fresher for longer, whether you’re storing leftovers in the fridge, meal prepping, or taking snacks to sports events or lunch to work or school. 【Convenient】No need to remove your food out of these containers before heating. Simply microwave your food in these containers WITHOUT THE LID and enjoy hassle free meals. 【Keep you healthy】The best thing about Prep Natural Portion Control Containers is they can help you cook at home and eat healthier food when you want to eating on-the-go, office lunches, picnics or camping! 【9 sizes available】9 different size of the Glass Meal Prep Containers can help put different meal in the Containers and organize your meals that you want.Two Microfiber Cleaning Cloths is included for cleaning.