Dedicated to all fans of twisting something in their hands) 2in1 contraption, since you first need to assemble it, almost a 3D puzzle. The plastic is tactilely pleasant, the fasteners are not super-tight, so there is the possibility of incorrectly turning and, theoretically, breaking. Because of the fasteners, it rustles softly in the hands, which can infuriate others. All in all, a great item for teens and adults with restless hands and to pass the time in line.See full review