This Bio Series ceramic knife features an ergonomic handle made from a bio-derived material (sourced from sugarcane) that complements the ultra-sharp white zirconia, and non-corrosive blades that will never oxidize food. All Kyocera ceramic blades are manufactured in Sendai, Japan, in a factory that generates solar power to offset energy consumption. This knife set includes our three best-selling knife sizes and an 11-inch bamboo cutting board, the perfect combination for recipe prep.