Classically styled with a polished, stainless steel exterior and a satin-finished interior, Calphalon Tri-Ply Stainless Steel cookware is designed with three layers to ensure even, consistent heating. A heavy-gauge, aluminum core surrounded by two layers of stainless steel provides excellent heat conduction for browning and enhanced control of the cooking process. Features: Vessel Construction: Crafted from two metals - a full, heavy-gauge aluminum core encased between two layers of stainless steel. Key Performance: Three layers; stainless steel, a heavy-gauge aluminum core and additional layer of stainless steel offer even, consistent heat conduction for excellent browning and enhanced control of the cooking process. Exterior: Polished, magnetic stainless steel. Interior: Durable, satin finish stainless steel surface is safe for use with all utensils. Handles: Cast stainless steel. Triple riveted for secure handling and durability. Long, Cool-V handles stay cool on the stovetop. Lightweight, ergonomic design for comfort. Usage: Vessels are safe to use on gas, electric, halogen, ceramic and induction stovetops. Oven and broiler safe.