The ulu board is a traditional Alaska square block of wood with a circular depression smoothly hollowed out of the center. It also has a wood holder to insert the knife when not in use. Accompanying the board is a beautifully curved knife. The gently curved shape of the ulu allows the force to be centered more over the middle of the blade than an ordinary knife. The rocking motion used when cutting on the board with an ulu holds down the item being cut, it is also easier to use an ulu one-handed. Our board measures 1 1/2 " in thickness and is 8" square.