4×4 Rubik Cube
4×4 Speed Rubik Cube puzzle for advance players builds intelligence. The Classic Challenge Puzzle Game That Will Never Go Out Of Style. 4×4 Speed Rubik Cube has great overall performance. This cube has smooth speedy moves, super comfortable and handy.
There are many benefits in learning how to solve the cube: Improve your concentrations, improve the hand-eye combination, improve the spatial thinking, increase IQ level, improve overall cognitive skills and keep the mind sharp in old age.