Crafted from durable stainless steel, this three tier steamer is finished with non-stick surfaces and is guaranteed for 10 years for added peace of mind.Instructions for Induction Hob Use:Choose the correct pan size for each surface cooking area. The diameter of the pan's base should be equal to the size of the surface cooking area. If the pan size does not match up to the surface cooking area, the surface cooking area does not sense the pan and will not activate.