Silicone baking mats&Pastry mat are made of woven fiber glass coated with food grade silicone on both sides.Designed for almost all types of ovens,The mats offer multipurpose uses for preparing,cooking,and heating up food.From Macarons baking,cookies baking to gourmet pastry making,great for working with sticky materials such as gooey dough,caramel,or anything your imagination allows.Nothing sticks to the mat.