ABS material Made safe BPA free and non-toxic Stick-less smooth surface; Cross shaft design freely adjustable smooth feel; Anti-adhesive groove smoother and more durable no longer have to worry about the feeling of the speed cube after playing for a while; High quality and Superb rotation good fault-tolerant performance 56mm*56mm mainstream game size suitable for Suitable for beginner and professional WCA major competitions; Light to 80g light hand suitable for children even if you practice for a long time you will not feel tired; Color upgrade enhance the recognition which is conducive to rapid restoration; Benefits of Solving a Puzzle Cube Improve your concentrations Improve the hand-eye combination; Improve the spatial thinking increase IQ level Improve overall cognitive skillsKeep the mind sharp in old age This speed cube game will never go out of style and keep your kids off TV / Ipad Specification： Level: 3 x 3 x 3 Size: 56 x 56 x 56 mm Material: ABS Net Weight: 78g