Like the all mesh seat back headrest for cool comfort & extended sitting. Somewhat stiff if wanting that kind of support. Adjustment knobs are not the best or easiest to use as compared to other chairs.
This chair wasn't what I expected - it's way better. Not only am I totally satisfied with how comfortable it is but also how fast it was delivered and how easy it was to put together.
This chair was worth it for me. It has the features you need to be comfortable (and reduce risk of pain in legs/back/shoulders) while sitting for long periods of time.