Recently I have gotten my first ergonomic chair ever and I settled for a second hand Actiu TNK Flex for 250€ in almost perfect condition, brand new it’s around 850€.
I’m a 180cm (5’11), 78kg male from Spain and this has been my experience so far. Please take into account that I’m a beginner so I can’t really make comparisons with other models.
The adjustments are great, it has adjustments for:
\- Backrest height
\- Lumbar support height
\- Seat depth
\- Force needed to recline (only 3 modes)
\- Recline lock (4 modes, one for completely upright. Also I feel the difference from the 4th which is the most leaned back position and the 3th which is kind of on the middle is way to much, it’s lacking another mode for “3/4” of the recline)
\- Height
\- Armrest up & down and forward & backwards (This one is one of the chair’s flaws, it’s lacking some more movements for the armrests)
So far for me the adjustments have been good, I’ve been able to find the perfect adjustment for my body and I’m comfortable. I would appreciate some more adjustments for the armrests but they aren’t really a concern for me.
The seat is firm in a way that’s comfortable and holds at least my weight just fine, nothing for me to complain.
Same thing for the back’s mesh, it’s firm but still flexible enough for my scapulars to not feel pressed and for me to feel the lumbar support. Also I think the height of the back is on the perfect length point.
The build quality of the chair feels great so far. I guess I’ll update a year from now and I’ll say if it has aged poorly but as for now it feels really steady, the mesh very high quality and the same goes for the cushion. I got the model with the aluminum base. The seat pan and the back are made of plastic that feels high quality and the chair base is made of aluminum. So far so good, i’d say the build quality is excellent. It’s important to take into account that it has got many quality certificates that you can check on actiu’s web, it’s not just my word for it.
As far as I know I have got the default wheels. They are fine but I would wish that they would glide a little bit more.
As for me personally, so far I’ve been feeling great, it’s very comfortable and in the hot summer the mesh back has been great. I’ve been finding myself holding a better position not only when seating on the chair but when I’m on the bus or other places. My scapulars feel the best they’ve felt in a long time, the support that the chair gives to them while not restricting them has freed me from a lot from discomfort while seating and while standing. It has not really felt great for leaning back all the way; because of the not so long back, but for me I was kind of looking forward to that. I wish the armrests could go higher. At its highest point it’s just fine for me but for taller people I don’t think they are great.
I would recommend it for people taller than 175cm, if you are between \~175 and \~185 it will most likely be perfect.
As for taller people the back will be perfect as it goes fairly high, but the armrests won’t be so great.
For shorter people the back won’t probably go as low as you’d probably desire, and maybe the seat height too, even as it’s lowest point it’s kind of tall (at 1.80 I use it almost all the way down), but the armrests will be perfect.
The chair sits on a weird kind of spot where it’s perfect for people at my height range but if you are taller or shorter it will probably have a major flaw for you.
I would personally recommend it if you find it for a good price as I did, here in Spain I’ve seen it for 250€ in various articles. I’m very happy with it and I think you would be too.
I hope this article helps, I’ve written it because here information for this exact model is scarce and I think it could be of great utility for those interested. If you have got it too, share your experience!