Containers are made using high quality polypropylene material. These products ensure safety, hygiene and quality for you and your family. Do not use hot water to wash. These containers are airtight, BPA Free, Freezer Safe, unbreakable food storage container. These are suitable For - Pickle, Dryfruits, Cookies, Food, Wet and Dry food, to refrigerate food and for storing small non food products as well.