Viking Hard Anodized cookware is made from heavy gauge anodized aluminum for durability and even heat distribution. The anodizing process strengthens aluminum to be twice as hard as stainless steel. A stainless steel base offers stability and compatibility with induction cooktops. Three layers of nonstick coating ensure easy release and longevity. Cut rims enhance the fit of the lids, and tempered glass lids offer visibility while retaining heat and moisture. Ergonomic stainless steel handles are securely attached with rivets and stay cooler on the stovetop.