Knock off versions with the same style are all over amazon[1] at a 5th of the price. Im sure the helinox versions are better but 5x better?

[1] https://amzn.eu/d/8uoKjrS

At the last few grams, a small reduction gets very expensive. Helinox are super light, great for hiking and motorcycles. If you’re in a car, you can take a lot more with you.

Guarantee the knock off versions use cheap pot metal rivets and will fall apart after 4 uses.

In my poorer student days, I actually used one of these (stye) as my primary writing chair in my home. If it's the right size for your shoulders and arms, it works quite well

They look nice. One question though, they seem to be mostly tilted back, do you think this would be comfortable if I use it with a desk?

They might be a bit difficult for that, definitely more for chilling out.

They say that they hold up to 120 kilos but I find that simply impossible to believe given how thin the frame is and the joints being made of plastic.

You can't see inside the join, it's possible the metal pieces connect and the plastic is just for guidance or to prevent your fingers getting caught.

No, the plastic parts are sockets and the aluminum rods do not connect to each other. The rods are not stock round profiles—they have a slightly trapezoidal profile and fairly thick wall. This is the special sauce of Helinox’s parent company, and definitely can hold the weight.

I bought some of these after getting sick of cheap ones that break and have non-replaceable fabric that tears easily after enough sunlight. Great so far.