Cutting board is an essential tool to use along with knives. The lasting of sharpness of your blade would depend on the hardness of cutting board too. A soft cutting board would retain the sharpness of your blade. We handle cutting boards made of natural wood and EVA. The natural wood cutting boards made of Hinoki woods and gingko woods are soft and do not damage the blade. Though it cannot be bleached or boiled for sterilization. Soft and elastic EVA cutting boards cannot be boiled for sterilization though use bleach and easy to take care.