Kind of like a Rubik's cube, but much harder. Turn the puzzle to line up balls of the same color. It appears to be approx as difficult as the Rubik's cube - VERY difficult. We don't have a solution for it right now. Comes solved, you're on your own after that though. About 4 1/4" tall with around a 2 3.4" diameter.
Check out these other great travel items:
Cathedral Travel Game
Dizzy Marble Maze
Twist and Shout