Designed with Chef Nancy Silverton and crafted from pure French Porcelain, the Baking Slab is the first of its kind. Made in France Naturally Non-Stick 202-Year-Old Porcelain Recipe Thermal-Shock Resistant Lifetime Warranty Made without: PFAS, PFOAS, PTFE, LEAD, CADMIUM, BPA, ALUMINUM Designed with and for Chef Nancy Silverton, the Baking Slab is the first of its kind. It begins with a 202-year-old Porcelain recipe held secret by skilled artisans in the Loire Valley. The finest and most precious of all bakeware materials, it is also the most demanding to produce. Kaolins, clays, quartz, and feldspars are mixed, shaped, enameled, and baked three times for over 50 hours at temperatures exceeding 2500F. Porcelain provides even heating, ensuring crisp corners and gooey middles without over or underbaked spots. Ours is microwave- and oven-safe up to 650F and thermal shock resistant, meaning it can go from freezer to oven to table with ease. Perfect for slab pies, focaccia, sheet cakes, and more, discover how this unique Bakeware can make your most cherished recipes even better. Dishwasher, Oven, and Freezer-Safe Weight: 3.8lbs Total Length (w/handles): 15 3/8” Total Width: 9 7/8” Total Height: 1 3/8” Depth: 1 1/4" Baking surface length: 13” Baking surface width: 9”