Unique high-tech design speed cube: It can produce a stunning blue light effect under dark atmospheric conditions. Before playing in the dark, it needs to absorb light and can absorb all kinds of light. Leave it under the light for about 10 minutes. After absorbing light, it will glow in the dark. Easy to twist and smooth to run: The improved anti-burst technology and structure can achieve extremely fast and smooth twisting. Excellent hand feel, high fault tolerance, and rounded corner design, perfect cube puzzle, suitable for playing in the dark. Excellent intelligence game performance: this 3x3 speed cube puzzle game can be used as a traditional educational method to cultivate children's logical relationship and thinking. For children or adults, they are a brain teaser. The product is packed with single-layer cardboard. Although the product has passed the standard drop quality test, damage caused by violent transportation cannot be ruled out. Due to the particularity of fluorescent materials, the surface of the fabric cover is attached to the main body. If it falls off, reattach it, which does not affect the use.