Made by Mauviel, France's highest quality cookware manufacturer, these pans have a multi-layered core of highly conductive metals for fast, even heating. A substantial layer of 18/10 stainless steel wraps entirely around the 5-layer core, giving the pan an overall thickness of 2.6mm. The thick bottom ensures that the pot retains its shape. Cast Iron handles are secured with stainless steel rivets for maximum strength. These cookwares are designed for use on gas and electric as well as induction cooktops.