This stackable game contains 18 wooden stones from sustainable forests, in various sizes and colors. They have irregular shapes designed to be stacked to practice balance, thus developing children's motor coordination. It's an open educational toy that invites children to build, to freely create and let their imagination fly. Develops visual, spatial abilities, and fine motor skills. These activities help children to learn about numbers and develop sorting skills.Details:Multicolor11.42" x 6.1" package size18 stonesDevelops visual and spatial abilitiesDevelops fine and gross motor skills in childrenLearn about numbers and develop sorting skillsDeveloping environmental awareness by supporting eco friendly productsWoodFor ages 3 to 6 years