This reusable food storage bag is made from non-toxic food-grade silicone, and is dishwasher, microwave, fridge and freezer safe. FDA approved silicone. Air-tight and leak proof. Perfect for storing cereals, fruits, vegetables, seafood, meats and even juices.Heat and cold resistant with working temperature range of -60˚C to 260˚C.Can be easily cleaned using soap and hot water or put in the top shelf of the dishwasher. Use a small amount of vinegar and baking soda to remove any stains when necessary. Avoid abrasive cleaners.