Cookina is a flexible mat with a nonstick surface that can withstand heat up to 500 degrees. The reusable mat works as an alternative to aluminum foil or parchment paper. Food doesn't stick to it so you can use less oil in your cooking. These nonstick mats go on the grill or on cookie sheets or on the bottom of the oven; food glides right off the surface. The material is food-safe PTFE ( PFOA free) coated non stick surface. Reusable and reversible.