The copper core of this cookware surrounded by two layers of aluminum allows for superb heat conductivity as well as an even heat distribution, which means no hot spots while cooking. 18/10 stainless steel exterior and interior layer adds an attractive finish that is also easy to clean. Exterior also has a copper band for an even more attractive look. Stainless steel stay-cool handles are secured with sturdy, non-corrosive rivets. Lifetime warranty. Dishwasher safe however hand washing is recommended.