This reusable baking mat is made from flexible silicone and fibreglass and is perfect for lining baking trays, rolling out pastry or kneading dough, without the need for grease. It can withstand temperatures ranging from -40C to + 220C and is safe to use in the freezer, microwave, oven and dishwasher. The fibreglass and silicone construction is incredibly durable, BPA free and completely food safe.