UGears Flexi-Cubus is new addition to our mechanical 3-d puzzles collection. Flexi-Cubus is a geometrical toy in the form of a cube made of eight joint-connected spheres. Each sphere constitutes a mini-mechanism featuring a flexible connection that allows it to move and roll over one another creating various geometrical shapes. Designed as an anti-stress toy, Flexi-Cubus can help alleviate tension and stress and relieve anxiety.