The most comfortable and best fitting chair I have ever owned! I did a lot of research on Dxracer chairs before I splurged on the Sentinel. There are a ton of negative reviews out there on Dxracer chairs, however most of them are due to damage from shipping. I ended up ignoring the reviews and selecting the Sentinel based on height/weight recommendation from the Dxracer website. The range of motion and heavy duty build had me convinced this was my best choice. The awesome looks was just a bonus. I'm happy to say FedEx got my chair to me in pristine shape and the chair was well packed and protected. Keep in mind this is a very heavy duty chair and you might need assistance with lifting or moving the box. The chair was easy to assemble and the directions are clear and easy to follow. My mechanically inclined 16 year old son put it together for me while I supervised over a glass of ice tea. :) it's so simple anyone can do it. I've owned six different computer chairs in the last 20 years and the Sentinel will be the last chair I'll ever have to buy. I'm 6-1 and about 300 lbs and I spend most of my time in an office chair due to a back injury while in the military and numerous surgeries have ended most of my normal activity. I got tired of blowing out the lifts on $150-$200 chairs so the last chair I ordered was a big and tall HD chair, but the back doesn't adjust and it promoted terrible posture which agrivated my back even more. The Sentinel is different. It is far more advanced than your standard office chair. What makes this an amazing chair is the incredible range of motion. The Dxracer Sentinel has a full range tilting back as well as a tilting seat. The handles also move in, out, front, back, and twist. The quality and heavy duty build are far beyond my expectations. The cloth and leather combination covering is a perfect mix and extremely comfortable and cool to sit in for long periods. The adjustable headrest is also a really nice bonus. However the extra lumbar pillow isn't necessary at all and places me too far forward in the chair. The pillow might be useful for smaller people, but if you are below six foot tall, I'd order a smaller Dxracer. At 6-1, my feet sit flat on the floor and if you are any shorter your feet would dangle, even at its lowest setting. Yes, the chair really is that massive, but it's a dream come true for the big and tall category. After just a few days use, my back is loving this chair and I'd love to thank the design team in person for making the first chair that actually fits and eases back pain. My only complaint is where was this chair 17 years ago when I had my first surgery? Seriously though, the Dxracer Sentinel is by far the best chair I have ever owned or tried. It's an amazing piece of engineering and worth every cent.