William Bounds’ heat-resistant food grade silicone pie crust protector is safe up to 500 degrees F, and is stain and odor proof. It is also reusable, keeps its shape well and flexible construction means that it’s easy to fold and store wherever convenient. The 100% silicone construction means that it is also dishwasher safe and easy to clean. Say goodbye to bent aluminum pie crust protectors, and it fits both 9 inch and 10 inch pies.