FANPAN Topperz Silicone Lids will revolutionize how you think about food preparation, protection and storage. One lid takes up a fraction of the space of traditional styles, yet fits a variety of bowls and pots. And with a temperate range of -75 to 450 degrees, they can go from the freezer to oven, then in the dishwasher! FANPAN Topperz create an airtight seal on any smooth-rimmed surface, works on stainless steal, glass, plastic and ceramic. They are reusable. No more wasted plastic wrap or tinfoil. Topperz are lightweight and flexible for easy storage. Perfect for preparing, storing, cooking and presenting your food at tailgating, viewing parties, and any time you want to show off your school spirit.