Innovative bakeware releases even the stickiest or most delicate baked goods quickly and cleanly, so it's easy to bake with confidence. Heavy-gauge steel core won't warp and heats evenly without hot spots so your cookies and cakes come out of the oven perfectly and evenly browned. The interior of each piece has interlocking non-stick layers that are designed to deliver long-lasting, high-performance release. Releases up to 2X better than Calphalon Classic Bakeware. Nonstick finish is beautiful and practical. Four 7-inch pizza pans with perforations that circulate air to give homemade or store-bought frozen pizzas a perfectly cooked crust. Dishwasher-safe and protected by Calphalon's full lifetime warranty.