Challenge your brain and focus! The challenge: balance all of the neurons on the single center post! How is your engineering ability? Made from hardwood. Recommended for ages 12+. Dimensions (cm): 9 x 9 x 11. Weight: 0.1 kg. Quality Toys originating in Canada. From the well-rounded corners (meaning no splinters or rough edges) to the vibrant certified non-toxic stains and finishes, and domestically harvested wood from companies using sustainable wood practices. Toys that are not only brilliant, they are built to last - the kind of toys you can feel good about passing down through generations!