The reason I give it 3 stars is because its assembly is the worst I have ever assembled in recent years. The instructions are completely inaccurate and hasty, many times you won't understand anything and you will have to improvise. Another complaint is that this thing that comes out and turns into a recliner is very convenient, but I don't know how long it will last because it feels a bit flimsy. Of course, it is made of aluminum and I don't think it will break... I will give an update in the future about whether it holds up... Now for the positives... The chair is beautiful for its price, its quality is okay (chairs of similar style cost 200++ with better quality leather...). IT IS THE MOST COMFORTABLE CHAIR I HAVE SAT ON. You sit and completely relax... If you use the cushions correctly (if you want to use them) and sit for 6-7 hours playing, you will get up feeling amazing. If you tighten all the screws correctly, the chair doesn't creak. Quality 4/5, comfort 5/5, design 5/5, assembly -10/5.

Update 9/4/2019
The chair doesn't creak as much, however, if it does, it's because the screws have loosened, so tighten them more. The armrests, although they have held up well, don't move as much, but you notice a difference after a while... and most importantly... the thing that comes out and turns it into a recliner, if you installed it correctly at least, it bends without any issues... so I think it should be fine for comfort, it doesn't break every day, I watch series and lie down with a blanket and it holds up... 5 months have passed, I will update again.

Update 6/10/2019
So I've had the chair for almost 1 year... it still works fine, it continues to be comfortable... but as time goes by, I realize that 140 euros is TOO MUCH for this chair... if you have 150 euros, don't spend them on this chair because it will disappoint you...

Update 16/08/2020
Well, the lifting mechanism broke, it goes up but as soon as you sit down, it slowly goes down... The chair creaks quite a bit, it needs to be constantly tightened (not such a big problem though). I replaced the mechanism for 15 euros... Guys, I'm approaching 2 years and I don't know if it's normal that I had to replace the mechanism...

Update 19/01/2023
Guys, after replacing the mechanism, the chair is perfect. 4 years later and no issues, if it starts creaking, just tighten the screws more. For 130 euros, the price I bought it for, it's perfect. It has paid off and with extensive use

***WARNING***
If the main criterion for purchasing an office chair is ergonomics (comfort, lumbar support, neck support, etc.), then avoid buying a GAMING chair, not only this specific one but ANY other. I speak with great certainty because I had the privilege of comparing this one with a similar one from my friend, a VERTAGEAR chair that costs 350€. As we both realized afterwards, GAMING chairs are designed to resemble a racing car seat, which means they are designed to be quite narrow and have hard parts.

Evaluation of the chair after one year of use (8.5/10):

ASSEMBLY (8/10):
Initially, the assembly is easy to a large extent because it is accompanied by fool-proof step-by-step assembly instructions. The assembly is definitely time-consuming, but not difficult at all. The tools needed (screwdriver, Allen wrenches) are provided in the package.
One problem encountered during the assembly process is that the slots in the leather do not align with the holes where the screws go, resulting in the need for more force with the screwdriver to pierce the leather. Essentially, this was the only time-consuming issue during the process.

QUALITY (7/10):
Regarding quality, the reviews are mixed.
The leather is of satisfactory quality, the seat foam is comfortable even after hours of use, the back foam is equally soft, the armrests are sturdy, and the wheels roll perfectly.
The only problem that spoils the almost perfect "image" of the chair is the very hard back and head cushions. I cannot understand why this happens, especially in contrast to the main body of the chair, which is very comfortable. Especially the back cushion, after a few minutes of sitting, feels like a wooden plank, and if it is removed, there is no support for the waist, which is much worse.

DURABILITY (9/10):
After a whole year, no problems have appeared. The leather does get warm during the summer, leading to sweating, even with a sheet on top.
Finally, the footrest, which is theoretically the hidden ace of the chair, bends too much, causing fear of breaking. I haven't used it enough, so I cannot report anything negative about it so far. After all, I am not the right person since I weigh only 65 kg and treat my chair like a museum exhibit...

ERGONOMICS (10/10):
No problems after a year with the chair's functions. The moving parts work like the first day (back tilt lever, seat height adjustment lever, handle height adjustment buttons).
Surprisingly, for a racing-type chair, it is quite wide, especially compared to the VERTAGEAR chair in which I couldn't fit even with completely closed legs.

CONCLUSION:
Although I was afraid that the result would be bad, on the contrary, I would say that the chair is perfect if it wasn't for the Achilles' heel of the back cushion, which honestly speaking is overly uncomfortable and hard, to the point of spoiling the truly positive overall impression.