Two-Tone Pan Yields Perfect Results. From quick finger foods to fancy desserts, Calphalon's jelly roll pan is the most versatile baking pan you'll ever buy. The shallow sides are ideal for baking small-portion foods such as fries, fish fillets and breadsticks. Colors affect baking performance because they conduct heat differently. That's why Calphalon's bakeware features a two-tone design: a silver grey surface underneath assures efficient baking time and a medium grey surface on top protects against overbrowning. Calphalon Classic Bakeware Rectangular Nonstick Jelly Roll Pans: Set of 2. Nonstick jelly roll pan made of heavy-gauge, aluminized steel. Heavy duty construction means no twisting or warping. Two-tone surface promotes perfect browning. Oven safe to 450 degrees F. Not broiler safe. Dimensions: Measures 18 in. x 13 in. x 1 in. A Closer Look: Heavy duty construction means no twisting or warping. And the advanced nonstick surface releases even sticky baked goods easily. Take Care: Hand washing recommended.