1. The reusable storage bag is made of food grade PEVA material. 2. Gasket provides a fresh seal that seals air and leaks. Freezer bags eliminate freezer burn while keeping food fresh and flavorful, perfect for freezing meat, chicken, fish, fruits and vegetables. 3. These reusable storage bags are perfect for meals on the go. Simply unzip the zipper and you have an open case with an open top. Grab your favorite salad, oatmeal for breakfast, kid's snack or fruit. 4. The transparent design allows you to quickly view the contents inside, which is convenient for storage and research. Since the dishwasher can damage the clear closure of the bag, we recommend that you wash it by hand. It is easy to clean with a bottle brush, then place the bag on a cup or mug to air dry. 5. Reduce the use of plastic bags and minimize your impact on the planet.