These containers are safe for use in microwave, freezer and dishwasher. These are food-safe and are mostly used for food items in restaurants, take-ways, delis or even for domestic purposes. Simply fill the container and close the lid. The snap-close lids help make these containers leak proof. These containers are light-weight and stack able so don't take much space to store. They are tough, light as well as reusable. They can go from the refrigerator to the microwave to the dishwasher without fear of damage. Containers are also highly resistant to fats and oils. Recyclable. Made of transparent plastic, they never look out of place no matter where you use them. These containers are safe for use in microwave, freezer and dishwasher. These are food-safe and are mostly used for food items in restaurants, take-ways, delis or even for domestic purposes. You can, however, use them for any items that you want to store, display or takeaway. 1000x 4oz Clear Plastic Containers Tubs with Separate Lids Food Takeaway