text: I purchased these to simply make it easier on my knees as I try to get in some exercise. I know they work because I have a neighbor who I have watched evolve physically after two knee replacements. I need a video on how to adjust, how to use...I just needed a little more help, a manual perhaps for this amateur. I would give them a higher review if I know how to properly set them up. I will update if I figure it out.