The YuXin Black Kylin v2 4x4 adopts frosted technology and each surface has round corner design, which effectively makes it scratch resistant and gives a good hand feel. The double card feet design effectively prevents the cube from popping when rotated at a high speed. The outer layer adopts a separate widening design, which greatly improves the overall controllability and is conducive to record-breaking. It has a small inner layer and big outer layer, which not only ensures the stability of the cube but also improves the mistake-proofing layer of the cube. A unique color match makes it easier to distinguish colors when a cube is rotated at high speed.