● Baked goods rise and bake evenly due to aluminums superior heat conductivity and the reinforced encapsulated steel rim prevents warping ● Nonstick interior for easy release and clean-up, hand wash only ● Natural aluminum nonstick commercial bakeware is made of pure aluminum which will never rust for a lifetime durability ● Pan exterior dimensions 9.63 x 9.63 x 2.5 inches and interior dimensions 8.88 x 8.88 x 2.5 inches