They didn?t rattle or shift at all. Then I noticed the rubber sole was lower on RIGHT foot than other and spouse agreed they looked flawed. Often items, especially furniture, appear larger in the photos than in real life. We had the dark brown which was really rich in color. Die Füße meines Sohnes hätten also nur sehr sehr wenig Bewegungsfreiheit gehabt. As far as durability goes, only time will tell, but so far so good! Das Kopfband wurde mit weichem Memory Schaum "aufgefüttert" ohne dabei zu dick aufzutragen. Then, finally, one of the wires for the left side severed. There seemed to be overlap on the end caps and the bolts would not line up correctly almost as though they were too short. It may simply be because there are no updates yet.