SAFE MATERIAL: This stickerless speed cube set is made of safe ABS material, it is internationally recognized safety and environmental protection materials, non-toxic, harmless to human and the environment.EASY TURNING: The rounded edge design can effectively reduce resistance, the unique anti-pop structure allows for longer enjoyment, and the lubricated internal corners ensure much easier turning and faster. You can adjust the level of tightness to customize the gaming experience.GREAT PUZZLE GAME: The puzzle cube is a game that never goes out of style. It helps improve children's hand-eye coordination and memory, activating their imagination and creativity. Keep your kids away from mobile/computer/TV. And it can relieve the pressure of young people, improving the state of sub-health.Perfect Gift Idea: This set of 2x2 3x3 4x4 5x5 cubes is a very popular gift for Christmas, birthday, Thanksgiving, Halloween, Children's Day and etc. You can have fun with your children, enjoy family time. And you can restore it with your friends, enjoy the whole process. EXCELLENT PERFORMANCE: What makes our speed cube so special is its exceptionally high stability, super fast speed and its long life. It is also a perfect choice to improve your personal best in competition!