Triply cookware is made using three layers of metal pressed together into one solid body. The inner layer is stainless steel, which is safe for cooking. The middle layer is aluminum, which spreads heat evenly. The outer layer is also stainless steel, which makes the cookware strong and suitable for induction stoves. These three layers work together to give you better cooking result... https://www.omichef.com/collections/triply-cookware