Material: PTFE coated fiberglass fabric, which is heat-resistant up to \(500^{\circ }\text{F}\) (\(260^{\circ }\text{C}\)). Function: Prevents food from sticking to grates or falling through, making grilling and cleanup easier. Versatility: Reusable, dishwasher safe, and can be cut to fit various grill types (gas, charcoal, electric) or ovens. Dimensions: Commonly available in sizes around \(16\text{\ in}\times 13\text{\ in}\).