18/10 Cr-Ni Stainless Steel. Super capsule base for homogeneous heat conduction. Exterior surfaces carefully polished. Ergonomic hand-held stainless steel handles. Clean with hot water and dishwashing detergent before first use. Do not use hard metal brushes while cleaning. Can be cleaned in the dishwasher. The Mega cooker series is build with the Solar Base base system that provides the highest heat transfer on any type of cooker and saving time and energy.