The OXO Mira 3-ply stainless steel collection is high-performance tri-ply built for modern kitchens. Each piece is crafted with two stainless steel layers and a heat-radiant aluminum core to deliver fast and even cooking. A stain-resistant finish on each exterior prevents heat discoloration. The ceramic non-stick coating is free of PFAS, PFOA, lead, and cadmium. Lightweight, contoured stainless steel handles keep cooking comfortable while the streamlined rivets eliminate food traps for a seamless, snag-free interior. Permanent markings on interior walls of the saucepans, stock pot, and saute pan are great for adding stock, water, milk and other liquid ingredients.