The Void Lantern Wheel Cube keeps the rotating wheel design of the original but adds a hollow center to each face, giving it a cool visual effect and an extra layer of intrigue. Beneath the void is an added layer of internal pieces that move during turns, making the puzzle even more challenging to solve. It’s a fun and unusual twisty puzzle that looks great and solves in a way that keeps you thinking. Packaged in classic Calvin’s Puzzle style and a great addition to any collection.