We worked with a U.S. maker of durable, restaurant quality stoneware to create these equally robust mixing bowls, designed to withstand the rigors of the kitchen and move to the table with style. The bowls are kiln fired at extremely high temperatures for a fully vitrified, non-porous finish, then completed with a lead-free, matte glaze in a classic black and white combination. Intended to provide a lifetime of service, the superior construction allows for a two year warranty against chipping. Dishwasher safe.