We developed our new Thermo-Clad™ cookware drawing on over five decades of culinary experience, designing every element to provide years of great results in your kitchen. Available only at Williams Sonoma, Thermo-Clad™ is crafted in Italy to our precise specifications using an exclusive aluminum alloy that provides up to 35% better thermal conductivity than other aluminum-clad metal cookware on the market. Our exceptionally versatile set pairs a 4-qt.-cap. covered pan with a perforated steamer insert – a combination that gives you plenty of options for everyday cooking. Count on the set to steam vegetables, seafood or dumplings to perfection – or remove the insert and use the pot on its own for everything from simmering soups and stews to braising meats and poultry. Designed and developed by Williams Sonoma, and exclusively ours. Thermo-Clad™ technology ensures efficient, uniform heating with precise temperature control and no hot spots. Pot combines a polished magnetic stainless-steel exterior with an exclusive aluminum-alloy core and a 18/10 nonreactive stainless-steel interior. Steamer is made of nonreactive 18/10 stainless steel with a polished finish. Pot's ergonomic handles provide a comfortable grip and maximum control. Exclusive double-wall insulated lid keeps food warm at 150°F for 90 minutes. Limited lifetime warranty.