Instruct: Classify the given review into positive or negative sentiment.
Query: poorly designed, not very usable. very well constructed, affordable

I am surprised to see so many people raving about this thing.Sure, it's well constructed, and the price is right. But it's not very usable.The chair/pad doesn't interface well with male anatomy (I am 5' 10").I don't understand why the foot bar moves up and down-- it would be impossible to use this with the foot bar at any position other than the highest one-- and I wish that it went a little higher.Here is what would be helpful: if you could adjust the distance between the foot bar and the chair/pad, a feature that you will find on 100% of roman chairs at the gym.Maybe I don't understand the range of exercises that can be done with it? It comes with no suggested exercises, and I have never heard of any being done on a roman chair other than back extensions -- so I doubt that is the problem.