It is not composed of polytetrafluoroethylene but consists of a glass fiber coating. Never Grill on a nasty, dirty grill grate AGAIN! Keeps your food from falling between the grates or sticking to the grill! In no time, you’ll be grilling like a pro. Non-stick and reusable, just wash in hot soapy water or in a dishwasher. The BBQ Grill Mesh Mat is perfect when cooking at home, and also ideal for cookouts in parks and campgrounds to provide an instantly clean surface to cook on. Instead of BBQ sauce causing food to stick and become mangled or burnt, it will flip over easily to remain intact, and cook to perfection. Makes cleaning up afterward far easier and less time-consuming. It will not retain or transfer tastes or odors between uses. Get it now!