Materials Side: Yakusugi cedar Bottom board: Cedar Size Outer dimensions: 37cm x 24cm x 5.7cm Inner dimensions: 30.7cm x 21cm x 4.5cm The beautiful wood grain is a characteristic of Yakusugi cedar. Natural wood has unique grain patterns depending on the environment in which the tree grew, the species, and the direction of the cut. Although it may be difficult to see in the photos, the finished Yakusugi product has been given an Uzukuri (wood grain highlighting) finish. The divider board is removable.