Down Home Cooking Silicone Baking Mats Fiberglass Silicone Baking mats passed rigid FDA LFGB Standards and are bpa free it is non toxic and safe for all food handling. Silicone is coated on strong fiberglasd fabric, making the mats flexible and long lasting, Will not chnge shape with heat or cold. Can withstand heat up to 480 degrees. Non-stick, will not absorb flavors. Replaces oil, butter shortening or parchment paper. Easy clean with damp rag. Can be used over 4000 times. Takes very little storage space Saves expenses and keeps food healthier.