Features: Bright and shiny look. Unique and special design with square and labyrinthic shape. Customized ergonomic curved shape design for hand comfort. Simple design, flick and spin for hours with just one or both hand. Small and lightweight enough to carry in your pocket everyday. Smooth surface makes you feel good without hurting you after playing a long period of time. Lightsome enough to spin fast without causing unpleasant noise. Good for ADHD or ADD suffers to concentrate their mind. Great gifts for children to kill time and have more fun or entertainment. Perfect toy for fidgeters to quit nail biting, smoking, taping and relieve their stress and anxiety.