We developed our Thermo-Clad™ cookware and bakeware 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 to our precise specifications using an exclusive aluminum alloy that provides up to 35% better thermal conductivity than other aluminum-clad metal bakeware on the market. This 10-piece set includes the foundational pieces every kitchen needs for daily cooking and baking. Designed and developed by Williams Sonoma, and exclusively ours. Thermo-Clad™ technology ensures efficient, uniform heating with precise temperature control and no hot spots. Cookware pieces combine a polished magnetic stainless-steel exterior with an exclusive aluminum-alloy core. Exclusive double-wall insulated lids keep food warm at 150°F for 90 minutes. Cookware is ideal for all types of cooktops, including induction. Cookie sheets feature a heat-sensitive aluminum core between a durable 18/10 stainless-steel interior and stainless-steel exterior. Aluminum core transfers heat evenly and efficiently for best-in-class baking results. Dishwasher safe. Limited lifetime warranty. 10-Piece Set includes: 12" fry pan 4-qt. saucepan with insulated lid 6-qt. stockpot with insulated lid 6 1/2-qt. sauté pan with insulated lid Two 14" x 17" cookie sheets Cooling rack Please note: Lids are counted as individual pieces.