This is undoubtedly the worst chair i have ever sat in ! The middle of the back portion has a bulge that protrudes into the spine of your back, the padding on the sides of this bulge are softer . I thought it would go down if i leaned on it . Just made my back hurt , gave me a headache and sent me to bed in pain. This chair seems to be made in such a way that I don’t understand who could use it , unless mine is a defective chair and other chairs are not like this.I am returning this chair snd recommend others to beware.