aluminum exterior, a hand-polished 18/10 stainless-steel interior that will not react with food, and an inner core that is pure aluminum not just at the bottom, but all the way up the sides for optimum heat conductivity. Stainless-steel handles stay cool to the touch and are secured with non-corrosive rivets, while sure-fitting stainless-steel lids form a seal to keep in moisture and nutrients for tender, flavorful food. Oven-safe to 500 degrees F, the cookware carries a limited lifetime warranty and should be washed by hand. 7 Piece MC2 Set includes 8" Fry, 1.5QT Sauce Pan, 3QT Saute Pan, and 6QT Stock Pot