.Ball bearing mechanism design that won't position omproperly and put them on the feet, which it rotate smoothly. .The special design enables the cube to have positioning system and light turning feel at the same time. .Pyramid provides stickerless edition which is more bright and colorful besides black and white. .Anti-sticky concave design to reduce the contact surface and make the cube without stick. .Big hole structures at both outside and inside to reduce as much bumpy feel as possible on accordance of high stability so that the hand will be more comfortable. .Practice your brain and improve your memory. .Perfect for testing your mental skill and patience.