Can't find a better chair for the price. Very comfortable and adjustable. Only small complaint is that the mesh can be uncomfortable on bare skin. Would probably prefer a non-mesh seat for this reason for when wearing shirt. But it is still a good mix of soft and firm.
Overall like the chair easy to set up easy to adjust won't be able to say much more without trying it for a long period of time (only used for about 1week so far). Will say that if you're over ~5'10" you will want to probably get a bigger chair (e.g. the similarly designed dexley if shopping at this price-point) or else be willing to go without the headrest. I'm 6'0" and went back and forth between ordering this or the dexley after reading lots of reviews. the consensus online seemed to be that the hyken was for people below 5'10" -- but all those reviews were also by "larger" people I am quite skinny so I was worried the dexley would be too large. In all respects the hyken fits me perfectly except the bottom of the headrest digs into the top of my shoulders and I had to remove it. (Before removing the headrest my wife also tried the chair and quite liked it - including the headrest but she's quite a bit shorter than I am.)
This model was shown in-store and it doesn't seem like the exact one (despite sharing the same item/SKU #). I sat in this chair for 3 minutes and realized that not only is it not the same one it's not a good fit for me. Now I've got to go through the hassle of taking it apart and returning this big thing.