What is the Rubik's Edge Cube? It's one layer of a standard 3x3x3 Rubik's Cube and it's trickier than it looks. Mix it up and try to get the colors realigned so that each side has only one color. The slim profile makes it a great "go anywhere" puzzle. Fiddle with it and try to form some cool shapes! For ages 8 and up. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs.