The TPan body is made of AISI 304, 18/8 superior food grade stainless steel for healthy and hygienic cooking. The 4.7 mm extra-thick sandwich bottom stays flat, heats evenly and will not develop hotspots. The AISI 430 grade magnetic stainless steel base plate that makes the pan work well on both Gas and Induction. Hawkins Stainless Steel Cookware also comes with a toughened Glass Lid made of 4 mm thick, heat-resistant glass with a strong stainless steel rim and stay-cool knob.