[main material] rubber wood[package size] about 4.7*4.7*4.7cm[product weight] about 0.1KGTo adapt to the age of 36 months or moreBy a number of small pieces of wood end-to-end into then you can move the piece of wood and put her spell a cube. Seemingly simple， but very troublesome Oh! After several attempts， I believe you will be successful. Unexpected ingenious combination， change you a single traditional ideas and ways of thinking， let you from the multi angle， all-round grasp one thing， it is rigid， dull decay of strong opponents， you have the confidence to innovative， bold attempt? It makes us more intelligent and more confident; it makes us forget the troubles of life.