It was really, really hard to attach the rubber straps. Took me a week! I did same one on each of 8 sides, next day 2 over, 2nd strap all around being careful to do opposite sides. Next day 2 over etc. I needed to position entire thing on edge @ me on chair to have strength to pull down, hold and with other hand attach properly. Get a man to do it for you! After soreness from arm dissipated, I began walking, which is why I got it. Works fine! Will use it. It could have been smaller for my use asSee full review