Better Gaming Experience - The 4x4 Speed Cube is the classic color-matching puzzle. Turn the sides of the speed cube so that each of the six surfaces has only one color. Pre-lubricated before delivery, faster rotation can be achieved. High quality. Good fault tolerance. Including English cube tutorial. Good choice for beginners and professionals. Environmental Protection Material - ABS material. Non-toxic and harmless. Stability of the molecular structure. Impact resistance. No performance loss due to long-term use. Ideal choice for early cognitive development in children. Stable Performance & Smooth Rotation - Excellent corner cutting. Adjustable tension. Hard to pop. Good control of the speed cube. Excellent stability. The inner corners of the cube are slightly rounded, which makes turning much easier and faster. The built-in spring design makes the magic cube more flexible and feels better. Not just a toy - Can improve your child's sense of space and enhance the child's memory; Perfect. To relieve the stress of life or work and enjoy relaxed pleasure. Prevent memory loss in the elderly. This classic speed cube will never go out of style and keep your children away from TV/iPad. Perfect Gift - Ultimate Christmas/birthday gift for kids, friends, and family members. Can also be given as a prize for students. Provides hours of fun while playing and is convenient and easy to carry in your pocket, so you can take it out and keep the fun going. Whenever and wherever you are, you can try expanding your brain capacity or spending some leisure time with your loved ones.