Master the secrets of Brainometry with these irresistible all-new fidget puzzles! Inspired by the Toy of the Year nominated Brainometry set, these hands-on puzzles help kids hone critical thinking and problem-solving skills as they shift and solve the cubes. Puzzle cubes also double as fidgets with satisfying twist-and-click action that keeps hands busy and minds focused. This compact puzzle set is ready for on-the-go fidget puzzle fun. Age 6+