Hard-Anodized Alumium is made when aluminum is processed by passing an electrode through it to oxidize the outer surface of the metal. That way it has a reduced resistance to corrosion. Cuisinart's hard-anodized cookware consists of three layers - the hard-anodized exterior, a pure aluminum core to aid with heat conductivity, and a nonstick interior (in Cusinart's case, this is their trademark "Quantanium" nonstick surface, made with titanium to make it last longer.
Most nonstick cookware should only be used in conjunction with wooden spoons, but Cusinart say their Quantanium surface is safe with metal utensils.
The cookware sets listed below come with a limited lifetime warranty.