Le Chef 5-Ply Copper Cookware Set combines the unrivaled conductivity of copper with the heating efficiency of aluminum and the durability of stainless steel. Copper exterior offers superior control, heats evenly and much faster than other metals; stainless steel interior preserves the taste and nutritional qualities of foods and is easy to clean. Heavy-gauge 2.5 mm thick 5-ply copper, aluminum core, Stainless steel for superior heat conductivity and temperature control. Unique 5-ply bonded design with copper, aluminum and stainless steel layers. 5-Ply Copper Cookware with aluminum core that extends to the rim, Stainless steel interior and Copper exterior. The high-grade 18/10 stainless steel used for the interior of each piece offers superior durability. The Copper Clad collection is oven and broiler safe and compatible with all cooktops styles, with the exception of induction cooktops. Round copper lid with riveted cast stainless handle increases pan capacity and promotes heat circulation. Cast stainless steel handles stay cool during use. Should be cleaned with warm soapy water or Stainless steel & Copper cleaner, easy to clean. Heavy-duty 5-ply construction suited to daily, utilitarian use for a lifetime performance. Country of Origin: China. Set Specification: 2 3/4-qt Round Dutch Oven with Copper Lid: Length 12 1/2"(INCLUDE the handles) x Diameter 8"x Depth 4". 3 3/4-qt Round Skillet with Copper Lid: Length 22 1/2"(INCLUDE the handles) x Diameter 12" x Depth 2 1/4". Superior durability: The Pans are 2.5mm thickness, lids are 2 mm thickness.5-Ply Copper Cookware with aluminum core that extends to the rim, Stainless steel interior and Copper exterior. The high-grade 18/10 stainless steel used for the interior of each piece offers superior durability.Heavy-duty 5-ply construction suited to daily, utilitarian use for a lifetime performance. Round copper lid with riveted cast stainless handle increases pan capacity and promotes heat circulation. Cast stainless steel handles stay cool during use. The Copper Clad collection is oven and broiler safe and compatible with all cooktops styles, with the exception of induction cooktops.Superior durability: The Pans are 2.5mm thickness, lids are 2 mm thickness. There are holes in the handles to hang.Set includes: 2 3/4-qt 5-Ply Copper Round Dutch Oven with Copper Lid, 3 3/4-qt 5-Ply Copper Round Skillet with Copper Lid.Country of Origin: China