Healthy MaterialMade of non-toxic, BPA-free, food-grade silicone, eco-friendly silicone stretch lids. Good sealing: Good sealing and good elasticity, keep food fresh in the freezer. This silicone case can be used in the dishwasher, microwave, oven and freezer. A notice: For the best seal, please keep the silicone stretch lid dry when using. . Keep Groceries FreshThe sustainable way to keep groceries fresh and stored. Airtight seal keeps food fresher longer and protects against leaks. Just before attaching, both the lid and the rim of the jar should be dry. The silicone stretch lid is better than plastic wrap. . Multi sizes for multi function 6 pieces : 6.5cm*5cm9.5cm*7cm11.5cm*8.5cm15cm*11cm16*12.5cm20.5cm*16.5cm The containers can cover in rectangular shapes and various sizes, including: Salad Bowls, Jar, Jar, Food, Can, Cans, Cups, Juice Caps. . Reusable & Easy to Clean Made of high quality silicone, soft texture, tear resistance, with super wear resistance. The use of the temperature range -40 ~ +230 , suitable for dishwashers, refrigerators, microwave ovens, electric ovens can be used. . 100% Satisfaction Guarantee Email us if you have any questions or need help, we will respond within 24 hours. We offer you friendly service. .