Our lunch bags are made of environmentally friendly and durable Oxford fabric and insulating aluminum foil, so that the food can be kept fresh for several hours, and it is non-toxic and harmless, ensuring the health of the food and your body.It can be used as lunch bag or shopping bag heat preservation, cooler bag, fresh function, going to the supermarket, can be used to pack frozen food, hot pot dishes, frozen drinks, dairy products, etc.