YM1333X Features Come with 16 different puzzles with different level of difficulty Interesting metal puzzle educational toy with traditional Chinese culture  Good for creative thinking and improve both your IQ & EQ Can exercise brain and alleviate pressure The portable design allows you to experience the fun at anywhere General Specs Brand & Model 3016 Material Mental Recommended Age 6+ Package Details Weight: 566.03 g Size: 31.5*26*3 cm