Humanscale chairs overall are beauts, personally loving the Differient chair for how clean and minimalistic while feeling super.
These sporty gaming chairs are not the one. A friend of mine doesn't even recommend it after splashing $$$ on it. Words I can clearly recite when asked if its good after two of use, "brainwashed, don't bother".
I just wished somehow my five previous worthless office chairs were not bought and invested into these ergo chairs instead by knowing about Humanscale sooner.