Our product is made of walnut wood. you should also wash it by hand , you should not leave it wet so that the product will last . there are 6 bowls, from large to small. product dimensions are 6- 23 cm 5- 19 cm 4- 16 cm 3- 14 cm 2- 12 cm 1- 10 cm. depth: 3 cm. more than 5 stocks are offered to be sold at the campaign price. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.