Stainless clad aogami super tungsten carbon steel with stainless cladding and a grey and black pakka wood (resin and pressure treated layered hardwood) handle. 

Aogami super holds an edge for a nice long time but is not stainless, avoid soaking and like any other knife keep out of the dishwasher. 

Avoid scrubbing the cladding with abrasives, but expect small scuffs from use over time.