7-layer material to the edge, 2.3 mm thick. The layered material with a thermally conductive core ensures that excellent and even heat distribution is created over the entire surface of the wok. This unique combination of three alloys offers up to 30% more efficiency on induction. It also ensures that the floor stays flat so you can switch from one heat source to another at any time. Silvinox surface treatment for maximum resistance. Thanks to the small, flat base, it is suitable for all types of stoves, including induction stoves. Lidless. Dishwasher safe.