Well i didn't know what think,  i never shopped on line before. I was really pleased that the chair arrived before the time that i was suppose to receive it and the instructions for putting it together was just so easy . I have used the chair for about two weeks now and i find it really comfortable, i have had problems with my back for years, and just went through a back operation and i find some of the settings really comforting  and i am sure that as my back get's much better i will find the benefits of the remainder of the settings just great as time goes on.