I have been looking at chairs for months and I finally settled on this one. I put it together in a half hour. No special tools are needed and everything is included. When I was unpacking everything, I could tell this was going to be a winner. I have been sitting in it all afternoon and now watching a movie in it. I have a bad back and it is so comfortable, very supportive and has all kinds of adjustability. I love the seat, it's wide and just the right amount of support for me. I'm working remotely and wish I had purchased this months ago. It is probably the most comfortable office chair I have ever sat on. I love the rollerblade wheels as well. Well made and solid construction.