I purchased this bike in means of becoming a healthier me and because I did not want exercise equipment that would take up a lot of spave being that I was residing in an apartment at the time of purchase. I assembled the bike myself. I took about 45 minutes. I would have taken less time had I had someone to assist me with certain steps. I love the featurs of the bike. However, I am 5'1. therefore, I automatially put it at the highest setting length wise. However, disappointment set in becaue eventhough I assembled and set the settings for my leg lenght, I was still not able to efficienctly use the machine. I would have to lean back in order to pedal the bike efficiently. This was very uncomfortable for me. The seat was comfortable as well. Performance Performed well the times that I did use the bike. Comfort The seat was comfortable and large enough to fit any size person. Ease of Use This is not a complicated machine to use. Durability Very durable. Design This machine was designed with a basic design.