MoYu Cube 3x3x3 Smooth YJ Black Speed Cube Puzzle Open it up, and you'll find a great little speed cube packed with all the features a champion cuber want! A good toy for elder and young, it can help the old prevent brain degeneration, and highly enhance the development of little kids. The new generation of rubik's cube -The speed cube was designed after a generation of research to solve all those annoying foibles of the cubes you may have tried in the past; 45 degree corner cutting. ECO-FRIENDLY PRODUCT - Recyclable material, harmless to human and environment; Comes with cool gift package, replacement stickers.