Kila Chef Tri-Ply Copper Bottom Saute Pan with Lid, 11-Inch New Design - 11" Tri-Ply Copper Bottom Saute Pan for Gourmet cooking Straight side, stainless steel interior cleans easily Extra thick 3.5 mm with 0.5mm copper for durable heavy use Ergonomic handle with stainless steel rivets Copper bottom, aluminium core, steel interior extend around sides