The Rubik's Speed Cube has an all new mechanism with faster movement, amazing corner cutting and zero pops. Basing it around a brand new spherical enclosed core design ensures that there is minimum friction between internal moving parts, but also between "cubies". This revolutionary new design allows not only for faster turning parts but also balances fantastic corner cutting with no pop technology. Never again will you pop doing a record time. The Rubik's Speed Cube conforms fully to all WCA rules and regulations and has been designed from the beginning with WCA competitions in mind. It has been painstakingly tested and improved to ensure the highest quality. The Rubik's Speed Cube is fully tension able and provides maximum customizability, which has never been seen before on a genuine Rubik's Cube. Ever have the problem of just not being able to get the right tension on your cube? That's why Rubik's have not only made it easier to change your tensions, but have provided three full sets of different strength springs. These springs mean you can find your perfect tension, allowing you to be faster than ever.