The V-Cube 4 Pillow is made from a high quality white plastic. The purpose of this puzzle is to scramble up all 6 sides of the cube and then be able to put them back so that each side is just one color.  This cube is slightly rounded to allow for better manipulation, and its internal structure provides it with an incredibly smooth rotation on all 4 layers, which is made possible by V-CUBE™ technology. This technology, invented by a Greek engineer named Panagiotis Verdes, makes it possible to create cubes with an unlimited number of layers while maintaining a sturdy frame and a smooth rotation.

• See at Puzzle Master