Pensofal Reserve Cookware Set, 5 Piece, Copper Cookware consists of 4 layers - 18/10 stainless steel, aluminum, copper and inox double bottom and is oven safe Copper finish will oxidize over time to give it a particular reddish color or us favorite copper cleaner/polish to maintain like-new brilliance The inox double bottom layer makes cookware suitable for the following cook tops: induction, gas, glass ceramic, halogen, electric, solid plate Each piece comes in its own elegant woven bag to protect your investment Made in Italy