We teamed up with the nonstick cookware innovators at Napa Valley-based Hestan to create our Thermo-Clad™ Nonstick collection. Designed in-house and made to our exact specifications, the top-tier 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 base. Each pan features a PFOA-free nonstick coating inside and out that allows low-fat cooking, easy release and quick cleanup. This 15-piece set provides a versatile range of pans for both everyday meals and entertaining. Dent-resistant, hard-anodized aluminum body offers quick heat-up and cool-down. Thermo-Clad technology ensures efficient, uniform heating with no hot spots. Durable PFOA-free nonstick coating inside and out enables low-fat cooking, easy release and quick cleanup. Patented tri-ply stainless-steel bases are fully encapsulated and will never corrode. Stay-cool stainless-steel handles are ergonomically designed for comfort and control. 4-qt. saucepan and 6-qt. essential pan have helper handles to ease lifting and transport. Double-wall insulated stainless-steel lids help circulate heat, lock in moisture and keep food warm. 8-qt. stockpot lid fits 6-qt. stockpot. Pasta insert fits in 8-qt. stockpot. Designed by Williams Sonoma; manufactured by Hestan. Safe for use with metal utensils. Ideal for all types of cooktops, including induction. Oven safe to 500°F. Dishwasher safe. Set includes: 8 1/2" fry pan 10 1/2" fry pan 12" fry pan 2-qt. saucepan with lid 3-qt. sauté pan with lid 4-qt. saucepan with lid 6-qt. essential pan with lid 6-qt. stockpot 8-qt. stockpot with lid 7.8-qt. pasta insert Please note: Lids are counted as individual pieces.