These 30 Oz glass meal prep containers made from borosilicate glass are microwave safe, freezer safe, oven safe and dishwasher safe. They are BPA-Free and durable. If you are looking for glass food storage containers with lids to meal prep breakfasts, lunches and dinners for the work week, or even stash leftovers, this set glass storage containers or airtight glass lunch containers with lids would be a great choice for you. They are perfect size, easy to clean and 100% leak-proof. These glass storage containers with lids make bulk cooking, storing and transporting the meals become easy, helping to save time in workdays.