Environmental protection material - Stickerless frosted surface, environmentally friendly ABS material, non-toxic and harmless, molecular structure stability, impact resistance, no deterioration in performance due to long-term use. our materials are internationally recognized safety and environmental protection materials, and have obtained CE certificate, please feel free to buy. improve a child's memory; Playing this in your spare time can release the work pressure of adults, while helping to prevent memory loss in the elderly. This speed cube game will never go out of style and keep your kids away from the TV/iPad.Unique Features - Superior angle cut, adjustable tension. Hard to pop, good cube control, excellent stability. The edges are contoured and the center piece is a circle which makes it much easier and quicker to turn.Perfect Gift - Wherever and whenever you are, you can try to stretch your brain capacity or pass free time with your loved ones. This classic puzzle game will never go out of style. Ultimate Christmas/Birthday gift for kids, friends, family members.