Premium Quality Cast Aluminium with 4 layers of Non-Stick Marble Coating making this truly the first and the very best really non-stick pan ever. * Marble coating both inside and outside makes cleaning this pan the easiest ever. * Marble coating is 10x stronger than teflon and last much, much longer * Made in Korea, NOT CHINA. Korea is very advanced in its nonotechnology which is essential in the manufacturing process of this marble-coated pan. * 26 cm (10 inches) diameter