1.Food grade silicone: the silicone lids have LFGB, FDA, and BPA certification, environmentally friendly, nontoxic, durable and leakproof, and for and adult. 2.Multisizes for multifunction: 7 sizes in 20 pieces: 2.5 cm, 6.5 cm, 9.6 cm, 11.5 cm, 14.5 cm, 16.5 cm, 20.6 cm, which can cover containers in different shapes and sizes, including: salad bowls, glass, food, cans, cups, beer bottle, juice caps, pots, pans, watermelon, pineapple, melon or other fruits and 3.Fresh food: these stretchy lids are a great way to keep food freshly stored. It prevents weathering and can be used directly on the fruit. It is paint, stress and easy to clean. Only before installation, both the lid and the edge of the container should be dry. The silicone stretch lid is better than with plastic film. 4.Reusable and easy to clean: made of quality silicone, soft texture, tear resistance, with super wear resistance. The use of the temperature range 40 ℃ 230 ℃, suitable for dishwasher, refrigerator, microwave oven, electric oven.