Cuberspeed Qiyi 3x3x3 Mirror Cube is a shape mod that creates different shapes from ordinary 3x3 cubes.It is an extra challenging because as it is scrambled it changes shape.Turn and twist the sides of the cube so that you return it back to its original cube-like shape It is made of non-toxic ABS material, PVC Stickers, which is lightweight, durable, harmless to human and environment. It doesn't corner twist as often nor does it lock up.Difficult to pop,good control of the cube.Definitely a good choice for you to improve personal record in competitions. It is a shape mod in which the pieces shape shift making it look like a mess,but once you solve it, it magically becomes cube shaped again. Improved anti-pop technology and structure for extremelyfast and smooth cornering. With lots of practice you can solve it in under 15 seconds! 100% new & original CuberSpeed Qiyi Mirror 3x3x3 Silver Sticker Magic Cube Qiyi Black 3x3 Silver Mirror Blocks Speed cube