Commodity instructions: After each use, clean the wrapping paper and allow it to dry completely before storing in a cool place. When used regularly, your plastic wrap can last up to 12 months. Tip: Store the plastic wrap in the refrigerator to further extend its service life. Our packaging is made of 100% natural ingredients without preservatives and additives. In particular, the shelf life of jojoba oil at room temperature is two years, if the shelf life after refrigeration is twice that. Protecting them from hot and humid weather will help you get the most out of your packaging. Cleaning instructions: Depending on how dirty the wrappers are, you can use one of the following methods to clean them: -Wipe clean with a damp towel: suitable for slightly soiled packages. -Rinse in cold water: Suitable for packaging that comes in contact with seasonings and needs to be cleaned. -Rinse with cold soapy water: suitable for oily or heavily polluted packages. caveat: -Do not use hot water because the wax will be melted. -Excessive use of detergent will make the wax wear faster. -Vigorous scrubbing will destroy the wax layer and make it peel off. Material: cotton or organic cotton -All our fabrics are from well-known manufacturers. They are 100% high-quality cotton, designed by talented artists from all over the world. -In addition to standard cotton, we also provide organic cotton certified by the Global Organic Textile Standard (GOTS) or Oeko-Tex standard. When you choose to buy organic cotton, you are investing in water saving, cleaner air, better soil and farmers' livelihoods. Size description: S-20.3cm x 20.3cm Suitable for bowls, cup lids, half an onion, etc. M-25.4cm x 25.4cm Suitable for half a melon, snacks, noodle bowls. L-30.48cm x 30.48cm Suitable for sandwiches, salad bowls, herbs and vegetables. XL-45.72cm x 45.72cm Suitable for a loaf of bread, large vegetables can be washed. reusable.