YUKSY Silicone Suction Lids are new generation of kitchen tools You Must Have. EASY TO USE Fits most smooth rimmed containers including stainless steel, metal, plastic, glass, melamine, Pyrex and ceramic. Just place a YUKSY Lid on your container and press down slightly on the center. Airtight when you lift from the center, but easy to peel and open from the side. Microwave safe and Oven-safe You could use silicone suction lids for different purposes, steaming, heating microwave soups, bowl covers in refrigerator. It can endure up to 480 degrees F, microwave safe and oven-safe. ECO-Friendly and Save Money Plastic is not biodegradable, it also leach toxic chemicals into the water and soil. The good news is that now you have silicone suction lids, you don't have to buy plastic wrap anymore. You will save more money in paper towels too. Reusable super suction bowl covers would serve you even better. Warning For stovetop cooking, be careful when you lift the bowl covers. As the bowl covers don't have any vents, steam will come out, please use tongs to lift the edge first! Do not expose lids to direct flame. Warranty - 1 Year Free Warranty - 30 Days return Package Contents - 6 x Silicone Suction Lids If you have any query, please freely contact us and we will be happy to serve you.