Inner Layer is 304 food grade stainless steel its rust and corrosion resistant also nontoxic Middle Layer is Pure Thick Aluminium Alloy body distributes heat uniformly and retains heat for long Outer Layer is Made from SS430 Super conducting stainless steel which displays superior thermal conductivity and is ideal for any cooking surface Triply Kadhai Dimension 129 x 94 x 27 Inches LxBxH Diameter 88 Inches Height with Handle 36 Inches Capacity 676 floz Stainless Steel Lid Dimension 94 x 94 x 19 Inches LxBxH Diameter 94 Inches Height with Handle 19 Inches Cook Healthy Quickly Saves Time 188 Stainless Steel Pure Thick Aluminium Layer for even heat distribution