INGENUITY DIAMOND TEXTURE - The cookie sheet pan set has a diamond texture on the base increases its non-stick properties and ensures even and quick heat airflow to the cookie, which makes the cookies consistently baked without any over or undercooked parts. PREMIUM EXTRA-THICK MATERIAL - With 57% thicker carbon steel, these durable oven trays are constructed from heavy-gauge carbon steel for stability, even heat distribution, and durability for years to come. Warranty against peeling off with heat-resistance temperature: 450℉. ALL EXCLUSIVE SET - This baking pan set includes 3 nonstick cookie sheets (13''x9'' /15''x10'' /17.5''x12''). They are just the right size, small for baking cookies, pastry, and lasagna, medium size for baking jelly rolls, large size for baking chicken and vegetables, etc. Just one set can easily satisfy your daily baking needs and help you take your baking to the next level. A HEALTHIER BAKING CHOICE - The Whitford-reinforced for exceptional release, the two-layer coating is chemical-free – PFOA, BPA and PTFE. It is thus safe to use. In addition, it has a smooth, non-stick surface thanks to a 34% silicon content that makes it a breeze to clean while protecting against scratching, staining, and corrosion. EXQUISITE TABLE ART - The fact that a baking pan set is not only a practical baking tool but also an affordable table art. Great kitchen utensils should be made with quality and aesthetics in mind. Our unique champagne gold baking dish is the perfect combination of them, adding elegant aesthetics to your dining table.