Safety and environmental: the silicone stretch lids , non-toxic and tasteless, long-lasting and leak-proof, food grade silicone rubber, 100% health and Safety.Multi-function:food wraps 2x Total 6 pieces per set: 6.5CM, 9.5CM, 11.5CM, 14.5CM, 16.5CM, 21cm. The containers lids can cover in various shapes and sizes,glass lids,food wraps,can lids,fruit bowl cover, cups lids, food storage, food saver,pots lids, pans lids, watermelon, pineapple, melon or other fruits and vegetables.Keep food fresh: Silicone lid The sustainable way to keep and store food, airtight closure keeps food fresh longer and protects against leaking.Reusable : stretch lids have long been tested to make sure they are not deformed and have a long life, very good wear resistance and tear resistance. The use of the temperature range -40 +240 , Suitable for dishwasher, refrigerators, microwave ovens, electric oven can be used and easy to clean.Notes: when you use before, please keep the outer surface of the container dry and not greasy, so as to achieve the best sealing effect. if you have any questions , we will reply within 24 hours. We offer friendly service.