I have been using this for 5 months and it is holding up much better than the kneeling chair it replaced.

I am in this chair for forty hours each week. I am above average height and average weight.

The padding is extra thick and tough but it does eventually get broken in and suited to your shape. After this much usage, the previous chair's padding had worn through to reveal the wood beneath. This chair still looks like new, ignoring some stray food from me eating at my desk.

One reason I bought this chair in particular is that the seat of this chair is level. Some kneeling chairs have you seated on an incline and constantly slipping off. This chair has the seat angled back slightly to compensate for the incline, and I find it more comfortable as a result.

I didn't think I'd care about the pneumatic lift but it is a nice upgrade over the giant screwbolt in the older chair. The rollerblade casters don't make much difference for me since I'm on carpet, but if you are on a hard floor I bet it's a big improvement. Professional chair racers will appreciate this beauty's handling in corners.

I hope they are still selling this chair when mine eventually becomes worn out, but if not, I will remember the Sleekform name when it is time to buy a replacement. Actually, I probably won't, but it will be in my Amazon history anyway.

It took me approximately an hour (+/- a few mins) to assemble two of these. The seller had informed me that the cushions are very firm and would be a bit rough on the knees/shins. The seller was correct; however, I can rest my legs or adjust the seat backwards with the pneumatic adjustment lever to release pressure on them. The primary benefit for me, however, is better back posture which this chair delivers. I can live with a bit of shin discomfort in exchange for a better back with no pain.

I've had this product now for a little over a month. I would give it five stars but it does have one issue. The top seat does not have an additional adjustment point (the angle is a couple of degrees off at desk height). A few things I think are important: Assembly is quick and easy, and the casters are absolutely wonderful (especially if you have hardwood floors, zero marks to date).

Adjusting to this chair did take a little bit longer than I had anticipated, but, as advertised, I do have far better posture. The cushions are exactly as advertised - high density. By no means does this chair start out comfortable, and usage for more than a few minutes is not particularly feasible for the first week. However, at this point, I would say this chair is ABSOLUTELY worth what I paid for it, and a far sight better than the regular office chair I used before. On a side note, the customer service is impeccable, I would definitely recommend this chair design to anyone who spends longer than a few hours at a time at a desk. It really does help alleviate lower back pain.

It sits very high, so I still end up hunched over. Took the wheels off and that helped some. The knee pad which ends up being a shin pad is very hard so it ends up being very uncomfortable. The height adjuster handle has a plastic piece that came broken. Then when I got to work, it came off in my hand separated from the piston. Do more research and don't cheap out.

Sleekform Ergonomic Kneeling Chair may work as advertised FOR YOU. My experience has been ..at best.. MEH. That's probably because I'm tall, 73", and my desktop is about 34". That equates to poor posture and isn't good posture the reason for the purchase?? Also, my shins aren't used to it and they start to feel sore after using the chair for any prolonged period. That's why I can only give 3 stars. Good luck!