These sturdy and durable glass meal prep containers are microwave, freezer, dishwasher, and oven safe. Leak proof and airtight glass containers with lids are really good for work lunches and freezing food at home. These food storage containers can keep food much fresher for days and seal wonderfully. You don't have to worry about these glass storage containers to make fridge smell up ,or stain from greasy food and leftover residue. They are easy to both clean and store. Our stackable glass food containers set has variety of sizes and shapes including round, rectangular, square. Their clear design is nice to be able to see what is inside and look so neat in the fridge.