【Puzzle Game】More stable structure and better performance, Speed ​​Cube's disturbance and restoration process can cultivate children's spatial imagination, improve their thinking agility, and also greatly contribute to improve their concentration. A great product to help you get out of stressful moments and refocus yourself. 【Smooth Rotation】Soft touch and good cut corners for faster and smoother rotation. Built-in elastic adjustment system, by tightening or loosening the screw, the tension of the cube becomes tighter or looser to better meet individual needs. Good fault tolerance performance brings you different challenges. 【Environmentally friendly and durable】Made of high quality durable ABS material, which is non-toxic and environmentally friendly. The performance of the speed cube structure is superior, not only in appearance, but also in performance, giving you a better experience Gently hold both sides of the cube, twist and turn the sides of the cube for an enjoyable experience. 【Decompression toys】The 4x4 speed cube can help people with ADHD regain their composure and can also be used as a light cognitive training product for the elderly to improve their memory and keep their thinking active; it can also be used as a decompression game in the office to help young people get rid of work pressure. 【Perfect Gift】Modern manufacturing process, beautiful compact appearance, more convenient to carry when traveling . Bright colors are more attractive to toddlers, you can give them to toddlers as birthday gifts, Christmas gifts, Thanksgiving gifts, sock fillers and classroom reward toys.