We teamed up with the nonstick cookware innovators of Hestan to create our signature Thermo-Clad™ Nonstick collection. Designed in-house and made to our exacting specifications, these top-tier nonstick pans are built for maximum heat efficiency and durability. Tri-ply layering incorporates a premium nonstick finish, a hard-anodized aluminum body and a stainless-steel induction-compatible base. Thermo-Clad technology ensures efficient, uniform heating with no hot spots. Dent-resistant, hard-anodized aluminum body offers quick heat-up and cool-down. Durable PFOA-free nonstick coating inside and out for easy release and quick cleanup. Patented tri-ply stainless-steel base is fully encapsulated and will never corrode. Induction-compatible base provides even heat distribution. Stay-cool stainless-steel handle is ergonomically designed for comfort and control. Double-wall insulated stainless-steel lid circulates heat and helps keep food warm. Designed by Williams Sonoma; manufactured by Hestan. Safe for use with metal utensils. Ideal for use on any type of cooktop, including induction. Oven safe to 500°F. Dishwasher safe. 6-piece set includes: 10" fry pan 12" fry pan 2-qt. saucepan with lid 4-qt. saucepan with lid Please note: Lids are counted as individual pieces.