1. [Importance of magic cubes]: Magic cube is an educational toy for practicing children's brain and improving their memory, and it is also an interesting toy to relieve the pressure of adults' work and life. It is a great gift for both kids and adults, you can take it anywhere just as a stress reliever. 2. [Well made]: This cube uses unique carbon fiber sticker. It is high quality material product, no-toxic and harmless to human and environment. Very good cutting, Turns very smooth and good hand feeling. 3. [Design features]: This cubes set is designed for both beginners and cube masters. Improved anti-pop technology and structure for extremely fast and smooth cornering. 4.[EXCELLENT STABILITY]:Great corner cutting ,Tension adjustable. It doesn't corner twist as often nor does it lock up. Difficult to pop, good control of the cubes, comes pre-lubricated and tensioned. 5. [Perfect gift and collection]: Package includes: 4 x magic cubes. Perfect Gift for kids, Thanksgiving Gift for elders. Anyway, it's a nice gift and collection. This classic puzzle game will never go out of style. So, don't hesitate, it's the best choice for practice and competition.