- A challenge to your intelligence and balancing ability.<br />- Improve your concentration and promote your spatial intelligence.<br />- An entertaining way to practice your patience.<br />- Environmentally-friendly<br /><br />                                                                                                                                Dimensions: 4.99 in x 4.99 in x 4.52 in (12.7 cm x 12.7 cm x 11.5 cm)<br />Weight: 2.82 oz (80 g)