Willking Octahedral 4x4 Speed Cube 4x4x4 Diamond Magic Cube Brain Teasers Educational Toy

To increase the intelligence of the kids,to release the working pressure of the adults,to help prevent a decline in memory of the elderly.Suitable for beginner and professional player.Enjoy hours of fun with you family and friends. (2)Combines high performance designs with good value. ,Crafted with original and eco-friendly ABS material, non-toxic, reliable, and lightweight and comfortable in the hand, harmless to human and environment. (3)Speedup your solving time without any effort and bring you the best turning feeling in advance. Easy turning and smooth play. (4)It is a classic colour-matching puzzle in which the colour shift making it look like a mess, but once you solve it, it magically becomes perfect cube again. Improved Anti-pop Technology and Structure for Extremely Fast and Smooth Cornering. A good toy for elderly and youth, it can help the old prevent brain degeneration and highly enhance the development of little kids. Perfect for testing your mental skills and challenging you