Aluminum core heats and cools quickly for precise temperature control. Heat Surround technology provides even heat distribution along the bottom and up the side walls of the cookware. Stainless steel interior is ideal for delicately simmering sauces and does not react with food or alter food flavors. Triple-Ply construction includes the unsurpassed heat conductivity of a pure aluminum core. It insures maximum heat retention and even heat distribution, eliminating hot spots. Tight-fitting stainless steel covers seal in food’s natural juices and nutrients for healthier, more flavorful results. Covers are dishwasher-safe. Rims are tapered for drip-free pouring. Dishwasher-safe; oven-safe up to 550 degrees F; broiler-safe.