This is the highest quality Steam Control™ 17pc Surgical Stainless Steel "Waterless" Cookware Set. Each piece is constructed of extra heavy surgical stainless steel and guaranteed to last a lifetime. The 9-element construction spreads the heat quickly and evenly. The steam control valve makes "waterless" cooking easy. You can cook healthier in this cookware because it eliminates the need for grease or oil in cooking. To use the steam control valve, start cooking on medium heat (never use high heat) then, when the valve begins to whistle, close the valve and turn the heat down to low and finish cooking. The 9-element construction allows you to stack cook with this cookware. Begin cooking on individual burners and when the valve whistles, you can stack the pans to finish cooking. The handles are superbly styled and are resistant to heat, cold and detergents. Limited lifetime warranty. Before you invest up to $2000 in cookware, consider our advantages and superior features. Limited lifetime warranty. Gift boxed.