- Good for creative thinking & improve both your IQ & EQ<br />- New challenge for the people who like to play puzzles toy<br />- You can compete with your friends to solve all for a dinner<br />- Hints: Take a Break & Retry it<br />- IQ puzzles also can cultivate your perseverance and patience<br />- An all-time favorite for young and old<br />- Functions: decoration、 brain training、 home and office fun<br />- Package includes: 20 sets<br /><br />                                                                                                                                Dimensions: 2.28 in x 1.65 in x 0.24 in (5.8 cm x 4.2 cm x 0.6 cm)<br />Weight: 6.31 oz (179 g)<br /><br />