I'm a video editor for an independent production company here in L.A. Between features, commercials, shorts, etc., I'm sitting all day, every day. having the right equipment is imperative. That includes having the right chair to sit in. I heard that Herman Miller Mirra office chairs are great for long-term sitting. When I realized that this Mirra chair comes equipped with PostureFit, I had to try it for myself. I had my Mirra chair delivered from Beverly Hills Chairs and I'm super pleased with my purchase. If you buy this office chair, I can guarantee you won't regret it.