If you're a baker, you know about silicone baking mats. Flexible, non-stick, heat-resistant silicone is the miracle material that replaces parchment paper and cooking sprays. Silicone mats let baked goods release perfectly, they prevent burning and promote even browning; you can even use them for rolling out and cutting dough or for making candy and fondant. They're safe from -40 to 480 degrees F and go right in the dishwasher for cleaning. The large size fits 26" x 18" cookie sheets and jelly roll pans, the smaller fits 18" x 13" pans. The Commerical model was developed for restaurant and bakery use and features an extended guarantee.