100% Safety】Food grade silicone, non-toxic, BPA free, Lead Free, Plastic Free.Store safe and healthy storage of adult and baby food.These silicone lids Rated -40 C (-40 F) to 232 C (450 F).Simply cover your food and heat in microwave or freeze.Enjoy a healthy and convenient life. 【Scientific Design】Scientifically design the thickness of the product, taking into account the extensibility and tightness of the lid. Allow the elderly and children to easily pull cover for bowls, and ensure the tightness of the product without leaking.And our covers got thicker grooves on the edges providing a maximum seal. 【12 Pcs 6 Sizes】Silicone storage covers come in 6 sizes (2.6", 3.8",4.5", 5.7",6.5",and 8.3"),Create a perfect seal on any glass, plastic or metal containers, they can also serve as replacement for lost lids for round shape containers. It suited to all shape of containers.e.g round ,square and irregular shape. 【Environmental Protection】Our lids can be reusable multiple times,no longer using disposable plastic wrap.The design concept of this silicone stretch lids is environmental protection, reducing environmental pollution, and even moving towards a zero waste lifestyle. 【Perfection and mission】Constantly improving the quality of our products, listening to our customers' most sincere suggestions, and satisfying them are our mission and the driving force for our continuous improvement.Through keep improving ,our silicone stretch lids fit better than before ,it will not been slip easily when the container is wet or high heat.Also useful for FRUITS and VEGETABLES: watermelon, pineapple, cantaloupe, lemon, onions or other fruits and vegetables.