Silicone Material:Silicone Spill Stopper lid is made of food-grade silicone,BPA free,non-toxic,eco-friendly,reusable and durable.Temperature resistance: -40 to +230. Easy to Use and Store:Just place them on a smooth surface and push down for perfect seal.Easy-grip interlocking lids save you space and reduce clutter.The lids take up so little space in the cabinet or drawer,and you can also hang them on a hook. Wide Application:The overflow stopper lid cover effectively avoids splashing and edible oil dripping,preventing the soup from overflowing.It can also be used as a steaming basket or heat preservation cover to form an air-tight,waterproof and leak-proof seal for reheating and storage. Special Design:The boil over spill stopper diameter is about 26cm,suitable for most pots and pans.The silicone cover has a steam release port and a silicone handle,which is easy to grasp. Easy to Clean:The spill stopper is non-stick water and not sticky oil.After using,you can rinse it with running water.