I got my mother one of those, she made it until age 101.
Like anything else, they come in sizes. Once she agreed to let me buy her one, Lazyboy in Maine sold my mother a chair they had in stock, it was made for tall men, she was a small woman. I visited, saw several pillows in it, asked her, found out it was too deep for her short legs, did some research, raised hell, made them exchange it for a proper size version.
I had a great office chair I wore out: these days, it is hard to find what you visually like to actually sit in at a store, and similar models can be quite different regarding comfort. I bought and returned two, finally found one in a store that I liked, gave them a chance to come close, they wouldn't, ordered it online, but at least I knew it fit me.