The Silicone Baking Mats by Matfer Bourgeat: Exopat Baking Mat, 24-1/2L x 16-3/8W, to fit 18 x 26 sheet, non-stick, heat resistant -40F to +580F, no greasing, reusable between 2000 to 3000 times, food-grade silicone, microwave safe, NSF, made in France...