Comfortable chair. Just some minor flaws.
932302
I like this chair. I'm a big guy with long legs, and it's comfortable for me. I would imagine that this chair would not do as well for someone with shorter legs.  The adjustable lumbar support isn't anything super awesome...just ok, but it's not uncomfortable.. I just wish the arm rests would go down further than they do.  Also, the "pleather" doesn't hold up very well to beagle claws. My beagle likes to get my attention by putting his front paws up on my knees.  One day he missed, and now there's a scratch down the front middle of the chair.
2712391
great chair had a few issues with some of the bolts for the arm but managed to get it in correct (mydumbassfalt) once put together this chair is fantastic it is so comfortable to sit in so far havn't had any flaws or issues an there really not much bad things about it.
1666318
Comfortable chair. I have had it for a month now, with no complaints. I will say that it feels a bit flimsier than some other chairs I've had. That is likely due to the arms being free (and I'm not used to that). However, I do at times feel getting on it could break it with force or weight, so if you are a heavy person, I would look elsewhere (I'm 168lbs/slender 6'1, as reference). It looks great and was very easy to assemble.
1182849
Very comfortable all around ... however lift cylinder seems to be sub standard, one bolt location for back rest must have been off a few millimeters causing it to cross-thread. despite that; for the price, can be a really great chair.
2101673
The chair doesn't take too long to set up and is pretty comfortable.

My two complaints with it are that it doesn't go as high as I would like, and does not lean back much at all. I frequently lean back in my chair when I work, and it's very difficult to do so in this chair.
1395036
I'll just list things I like about this chair. It's very comfortable and sturdy. I'm only 5'3'' so I'm glad I found a medium-sized chair that adjusts low enough for me, but I'm not sure if it'd be too short when adjusted to its full height for people taller than average (see pictures for measured height from floor to seat at its lowest and highest). Both the black mesh (the seat and back) as well as the leathercare fabric (the arm rests) feel like good quality for the price. The chair's tilt can be adjusted from a knob underneath the seat. It'll also tilt back some when you lean back. I also really like the headrest to rest my neck when I lean back. I feel like this chair will last me a long time :)

Edit: I'm not sure why the photos are rotated horizontally, I uploaded them correctly. I did do vertical photo captures, but it was to get the whole chair in! I'll see what I can do to fix it.
826272
Comfy chair, assembly was a pain as some of the screw holes didn't line up exactly. Overall its a good chair, would recommend.
3908366
Very comfortable office chair. It doesn't have all the controls of the $1,000 plus priced chairs, but it is comfortable with an easy to use height adjustment.
1320208
I got the chair today and it took me about 15 minutes with help to get it together. And yes, it will take two people to get it together properly. The chair is extremely comfortable but I would recommend not buying it if  you are under my height of 5'4". My feet barely brush the ground at the lowest setting. Secondly, when you sit on it, be sure you are sitting directly toward the back and not the front as it tips forward in a manner which indicates it'll probably snap sooner rather than later. The low back portion of the support is a tad high at my height but not annoyingly so. Overall it's a pretty decent chair for the price.
4624772
Chair was quite comfortable, but not too durable. After some time, the chair was leaning to one side and I couldn't move it back. Other than that, the chair is worth it's value and I'd purchase another one if I needed to.
2362330
Pretty solid chair overall for the price. Easy to set-up and I like it portability. My gripes would be limited adjustments. I wish I could move down the arm rest and that the material on the arm rests can chafe after awhile. Other than that happy with my choice
2113225
Pros: 1. Speedy Shipping .  2. very comfortable 3. simple and beautiful design 4. good quality of wood
Con: the bottom alignment of (one of) the hole and screw is off. I brought 2 chairs and they are both off. Hard to install for one out of 4 screws.
That's why it is 4 out of 5 stars.

 Note: The color is slightly darker than shown in the Amazon picture. Which I don't mind.
1103387
After I finally finished putting together my desk (built from scratch) it was time to look at chairs. My problem is that I spend 7+ hours a day working on the computer, but 99% of it being pro bono, I don't have the budget for the chair that would do my back and my butt justice. So, I settled on this mid-price chair on the positive reviews here alone, and figured that I could always send it back if it wasn't a good fit.

*Edited at the bottom of the review - see why I downgraded to four stars!*

PUTTING IT TOGETHER
Building the chair was a relatively simple process. The wheels and base simply clicked into place, and once I figured out that I had put one arm on the wrong side, it was a relatively simple process to put the chair and arms together. The chair comes with all the hardware you will need, and also includes an Alan key for tightening bolts - for some people this will be important, as there's nothing worse than not having the right tool for your new toy!

CONSTRUCTION/QUALITY
I have only owned older or cheaper chairs, but I do have friends with high-end chairs, and I'm pleased to say that this one in particular is just about right for the price-point. The overall build seems just fine - it's not rickety by any means and if you tighten the bolts properly there shouldn't be any give. The wheels move well, although I'm on hardwood so I'm not sure how they fair on carpet. Despite the arms and base being made of plastic/nylon, they are a very strong grade and should hold up just fine (I will update the review with any change in this).

ERGONOMICS/COMFORT
I find this chair to be very comfortable overall. There is some (set) lumbar support, and I find it quite easy to sit up straight without having to lean to far back to type comfortably. The chair comes to a nice height at the back (I'm 5'9"), and you can lean it back and set it or allow free leaning with the use of the side lever. The chair has a decent range in terms of height, although if you're taller or have a tall desk, you might find that it doesn't go as high as you might want. The seat is reasonably comfortable - it's definitely not the best I have experienced but so far has helped alleviate any serious fatigue - a legitimate concern when you spend many hours a day at your desk. The arms are unpadded, but not uncomfortable. I rarely use the arms, unless I'm watching a video or taking some time to think, so I didn't really weigh them in to my rating.

OVERALL
For the price I paid, I am very pleased and at this price point I believe the chair merits the full five stars. I now have a comfortable, decently-made chair for less than a hundred dollars (at the time of this writing), and it has definitely improved my ability to work for longer stretches, allowing me to finish up a day's work more quickly! Overall, I can definitely recommend this chair as an excellent contender in this price range!

*EDIT*
Well, I decided to downgrade this review to four stars. After having the chair for several months, the seat padding has greatly decreased in effectiveness. Now granted, I use this chair for several hours every day so this may not apply to some people considering the chair, but nevertheless it is worth mentioning. It was only when we purchased a second chair for my wife that it became clear just how compressed the cushioning had become - you could actually feel the difference in height! I will be buying a chair cushion to alleviate this, so I still can recommend this chair, but perhaps with a little less enthusiasm.
4787984
I'm surprised I like this chair so much considering the price, but it's actually quite comfortable and I think well worth the money. It's not the most comfortable computer chair you'll ever sit in, sure, but it's quite nice.

Also regarding the difficulty of assembly mentioned in some reviews - it's not *impossible* to put together, but I would say it's a bit difficult without an extra pair of hands to help you hold the pieces together. I feel like the screws maybe needed to be a bit longer to help keep things in place. It required fiddling (and not a small amount of cursing) to get the arms, back, and seat together.
3080663
Nice chair once you get it assembled. I was a bit worried by how banged up the box was when I received it, including metal parts of the chair poking through the cardboard but everything is in good shape. When you first unpack it, find the instructions (which are in a bag with the screws and hardware) and throw them away. Go to the Viva Office website and look at the instructions there. The ones that arrive with the chair are incredibly lacking.

I saw one complaint about the footrest not being far reaching enough for people over 5'2". Not sure where that info came from. I'm 5'11" and the footrest slides out plenty far enough for me. You have to both slide it out and flip it over to get the maximum reach.

The chair itself is very comfortable and seems sturdy and the lower back support feels great.
2944485
This is the 3rd office chair I've had in the past year. Each is a different model. As far as I can tell, they are all made in China with more or less the same parts. The first chair died after the piston (to raise/lower seat) failed after 3-4 years. The second one was defective, and now this. The mesh back is comfortable. The seat is not as well padded as it should be - you can feel the front edge of the seat frame if you lean forward. It would be better (though more $) if it were padded with something similar to TempurPedic. The arm rests fold up, which is a nice feature. Arm rest height is not adjustable (probably hard to design with the folding feature), and they are padded and upholstered with a rough fabric (not so comfortable). Personally, they'd be more comfortable if they weren't covered (i.e. just plastic). Overall a pretty good value for the $ (assuming it lasts a few years), but not an outstanding chair.
3946007
To start i'm 6'5" about 280.
Chair in general fits well, but even at its lowest seat setting my feet just make it to the ground.
Seat cushion is nice and thick, previous chair I owned was like sitting on the board beneath it.

Arm rests are at the correct height but th chair does sit rather high in general, most desks may not accomidate it if especially if you use a keyboard tray.

Head rest is nice, but sits a little to far back for my taste, the recline ability is short, but good enough for my needs.

Seat back is a little short for me (sits about at my shoulder blades) but once it wears in a little shouldn't be an issue.

Base is very sturdy, edges are a little sharp, carefull putting it together on hard wood floors or suraces that may scratch.

My biggest issue with the chair is the gas cylinder does not stay where I lock it, when I sit it goes all the way to the bottom position and when i get up it goes all the way to the top position, I have contacted the company and they are sending me a new lower half of the chair, but won't be here for a few weeks due to back order. Hopefully this is not a common issue.