inputs.text: poor instructions - almost returned hooks secure headrest posts snapped bought two mounts 3 4 hooks snapped instructions 4 basic pictures back box installation felt intuitive unfortunately instructions not share rehemovable piece hooks fit larger diameter headrest post not figure mounts broken tablet holder portion easy adjust able fit kids 7\\ navi tablets 2yearolds posture much better watched movie 5 minutes broke keeping thehem not mess paying exchange ziptie thehem headrests instead