304 stainless steel does not react with food and never rusts. 3-layered bottom with Steel-Aluminium-Steel layers saves energy and prevents burning. Impact Bottom is more premium and lasts longer than ordinary sandwich bottom. Ergonomic Stainless Steel casting handle for a firm grip. Strong steel welding ensures the handle does not shake throughout the life of the pans. Easy to clean and maintain. Reliable Wonderchef Warranty T&C apply.