Lumbar support on Hyken felt uncomfortable pressing into my lower back. Back started paining after sitting on it for less than an hour. I have a mesh chair at work but never felt uncomfortable sitting on it all day. Only change I needed was the back to be with more spring action when you want to stretch or lean. Thought of getting one with lumbar support to WFH. The key difference I observed between the chair I had at work and Hyken chair is I prefer the back and seat being straight/flat - 90deg join instead of curves with lumbar support covering across entire bottom half of the back. I also tried FlexFit Dexley Mesh Task Chair and felt lumbar support and seat on it much comfortable but after sitting on it for whole day had back pain. Returning both. I need to find chair with flat seat and back with wide lumbar support.
Seat is to narrow could be a little wider. And sitting an hour or so the front the support is hard on my tights. I would recommend going to an upscale model. I like the mechanism for adjusting the seat and back.
I have herniated L4/L5/S1 disc. I’ve been working from home since July and needed something with more support rather than just an upholstered kitchen chair. This had good reviews so I took the chance. Awful! It started with leg cramping a day or two after using. Figured I needed an adjustment period. Now I’m having a complete sciatic nerve attack and can only lay down to be comfortable. Even with my back issues I’ve never had something nearly this bad. I would just avoid this one.
The chair is extremely comfortable (we've ordered 2) but we have to return this one because of a very small manufacturing defect where the headrest affixes to the seat back - a screw receptacle embedded in the seat back had faulty threading. The chair had to be completely disassembled and returned. Not a fun task.