When you read that a chair works for people up to 200kg, don't be like me and assume that that includes all humans, including that meagre 50% of humanity we call women. Women over 100kg clearly don't have big butts.
The chair cuts into my upper thighs when I sit on it, because the flaps that go up on the sides of the seat aren't, as I assumed, made of foam, but metal instead. Imagine having two metal pipes cut into you while you're trying to work – that's going to be nice [sarcasm].
Seeing that there are basically no gaming chairs for women (huge gap in the market, someone), I blame bad design – this chair could have easily achieved the same aesthetic and functionality if those side bits were made of a good foam.