Matfer Copper Cookware has combined the heat conductivity of copper cookware with the easy to use stainless steel interior, making this a superior line of cookware. Each pot and pan features a polished copper exterior that is 2.5mm thick. Matfer tested various other thicknesses when they designed this series. The inside is a polished stainless steel, so your Matfer Copper cookware doesn't require extra maintenance, and doesn't need to be re-tinned like other lines of copper cookware. The edge is non-drip, and was designed to not have product burn onto the side of the pan. The large cast iron handles are counter weighted where they join the pan, this puts the balance point to the center between the handle and the pan connect. This larger heavy handle also takes a lot longer to heat up.