The 12 pieces include 6 transparent and 6 blue circular stretched silicone covers for storing food. These can satisfy your use on most containers. $ Safety and health: These silicone food lids are made of environmentally friendly food-grade silicone, 100% BPA-free, non-toxic and tasteless. The texture is soft and will not tear or warp. Heat resistance from 40 OF (frozen) to 400 OF You can use them as you wish to cover most types of food, and put them in the refrigerator, microwave, and dishwasher as needed. $ Space-saving and easy to clean: Food silicone lids can save more space and store more food in the refrigerator. Helps keep all kinds of foods fresh and prevent spills and splashes. The special silicone material makes the lid easy to clean. $ Applicable to various scenarios: reusable stretch and seal lids can be expanded to fit most bowls, pots, glassware, containers, mugs, cups, heat-resistant glass, jars, cans, food cans, instant pots, You can even use them to cover your watermelon, pineapple, cantaloupe, lemon, onion or other fruits and vegetables. It can be used as long as the size is right. $ Quality Assurance: Our products are of very good quality and can be a good helper for your kitchen life in the future