These plastic lunch boxes for food storage are made of food-grade plastic that is BPA-free, durable and unbreakable. These snap-lock plastic storage containers are leak-proof, easy to clean and dishwasher, refrigerator, freezer and microwave safe (base only, remove lid first, within 4 minutes).These food containers make it easy to store your leftovers or meal prep and keep them tasty, or they can be used as lunch boxes for adults or children.Great for portion control and also stackable to keep your pantry neat and tidy. These containers will last a long time and keep looking good to keep your cabinets organized.The airtight, leak-proof and stackable design provides maximum freshness and long term food storage, no more having to put up with spilled food in your lunch bag. The clear design allows you to easily identify the contents.