Ergonomic Kneeling Office Chair with Black Mesh Back & Fabric Seat – Adjustable Posture Support for Home & Office Workspaces

When it comes to kneeling chairs I've been using them for about 10 years now. Being overweight and spending a lot of time in a normal office chair due to the weight around my belly would kill my back, so kneeling chairs have been a miracle! I've had two Var Balans (ultra chic, way pricey, brilliantly crafted, but not at all adjustable) a $100 office depot chair, and this lower-end Flash Furniture model.Fortunately, I picked this up as an Amazon Warehouse return for 60% off, but I can see why the other person returned it! The instructions were comically pitiful. Fortunately, there are so few pieces that with some basic deductive reasoning you can figure out what goes where.Aside from the 200 lbs weight limit, it does seem quite sturdy. It wasn't nearly chintzy as I was fearing. We'll see how the metal welds hold up though, but it doesn't appear to be disproportionally weak.As most people have pointed out, the backrest is pretty lame and not adjustable. My suggestion is to use the kneeling chair without it and then later after you've figured out for sure the height you want the chair it, you can then adjust it on a solid workbench vice to bend the metal so that the backrest is there... but only for rare occasional use, not normal use.It's pretty obvious that the backrest would eventually rip out of the seat with repeated pressure by an adult. Unfortunately, there is no hinge or spring in the back rest so any pressure on the back rest is transferred right down to the base of the chair cushion.What I am surprised nobody has commented on though is the knee-pad. This thing is pretty narrow. Basically you cannot solidly rest your knees on it without squeezing your knees together or having the body width of a tween Asian. Weight limits aside, this is really best suited for a very skinny person who likes keeping their knees closely together. On my Var Balans I can get a decent bit of a "man spread" going and even hook my ankles behind each other. Or leave one knee kneeling and the other kicked up with my foot on the kneeling pad.For the price, I think I'll keep it as a guest kneeling chair, but intrinsic in the whole point of getting a kneeling chair is for some ergonomically-motivated reasons, and this particular model does seem to fail in that regard.Overall, I think this would be best very a smaller adult or child than a medium or large adult.It took me some time to get used to this non-adjustable Var Balans I'm currently using, and it is getting a bit ragged and I was worried that in its non-adjustableness my knees were getting too tightly bent, but this chair makes me appreciate what I have a whole lot more!'Adjustable kneeling chairs are tricky with the typical scissor-design since you cannot adjust seat vs knee pads separately. So it takes some clever engineering to get the ergonomics just right. Sadly, this falls a bit short in that department.I have a wooden chair that is similar to this at home, which I love. I wanted one for my computer at work. I ordered this one, because it has a back support on it. The back support is no longer attached, and is at home, because you can't sit in the chair with it on there. The knee-rest is not quite wide enough to keep both knees on there, so I usually sit on it with only one knee, and the other foot on the floor. My biggest issue with it, after about 6 months of owning it, is that two of the screws that hold the seat on the frame have completely FALLEN OUT, and won't go back in, because the holes in the wood are completely stripped out. (It is particle board, not real wood.)Over all it is not a terrible chair, but the problems it does have are rather annoying.I guess the fact that this was made in Korea explains why it was made only for short people. The distance between the seat and the knee pad means your bum sticks off the back. I am 1.85M tall which is not that unusual. It cost me $50 to have extending brackets made so that i could sit on it. Also the back rest is useless unless you are capable of bending the metal so that you can sit upright against it, otherwise it throws your back too far forward and completely offsets the benefit of the type of seat. The only good thing to be said about it is that it looks good.The back rest was wobbly even though it was screwed properly. May be it was a damaged piece. Otherwise the seat was good.Upon first sitting, the posture was fine. After hours of gaming and art, I had the worst headache and my back was killing me. My knees kept sliding sideways because the platform / padding for your knees was not wide enough. It adjusts, but it only folds in more to move higher.This is a sturdy, well-padded chair. Assembly is easy and straightforward. The only problem with this chair is that the backrest is not adjustable, and at any setting other than its flattest, the backrest will make sitting upright impossible. It's still comfortable without the backrest, and after a week without it I don't miss it at all.The chair itself is ok but the back part is misarable. If one is increasing ti a higher seat position the back part is moving forward and cannot be adjusted. This has the effect that the person sitting is pushed forward instead of sitting upright.I picked this chair up just by going off of what I read and this chair is all I want to use now when I am working at my desk. I'll even go and sit in it when my back is soar and 30 minutes later it feels so much better. Feels awkward at first but once you use it you will not want to use anything else.Broke into half after 1 month.I only weight 120lbsvery fragile