CHALLENGING & FUN- It is a classic colour-matching puzzle in which the colour shift making it look like a mess, but once you solve it, it magically becomes perfect cube again. Improved anti-pop technology and structure for extremely fast and smooth cornering. With lots of practice you can solve it in under 5 seconds!Enjoy hours of fun with you family and friends., EXCELLENT STABILITY- Great corner cutting ,Tension adjustable.It doesn't corner twist as often nor does it lock up.Difficult to pop,good control of the cube, comes pre-lubricated and tensioned.Definitely a good choice for you to improve personal record in competitions.This cube can be used for international competitions., ERGONOMIC DESIGN - Combines high performance designs with good value. The stickerless pyramid never requires stickers ,Crafted with original and eco-friendly ABS material, non-toxic, reliable, and lightweight and comfortable in the hand, harmless to human and environment.