The seat depth is fine, the armrests are decent, the mesh is breathable. But the lumbar support? That thing sits somewhere around your shoulder blades unless you mess with it. I didn't catch it until day three and my lower back was already complaining.
Here's the mistake: I assumed the lumbar would land in the right spot because it's an ergonomic chair. It doesn't. The factory setting is about two inches too high for a 5'10" person. You have to adjust it before you sit, not after you start hurting.
What I Learned After a Week
The lumbar pad moves up and down. Sounds obvious, but the lever is small and easy to miss. Once I slid it down to align with my belt line, the support finally did something. Also, the depth adjustment—the knob under the seat—matters more than I expected. Too shallow and you're sitting like a shrimp; too deep and your knees hit the front edge.
Set the lumbar first. Then adjust the seat depth. Then set the backrest tension. That order worked for me.
The Weird Quirks You'll Deal With
The armrests have this lateral wobble. Not annoying enough to return, but you'll notice it when you're typing. The mesh seat is firm, so if you're used to a padded cushion, your butt will complain for the first week. Give it time. The chair's also not as breathable as the marketing claims—mesh behind your back helps, but your thighs still get warm.
Delivery took eight days, box was beat up but the chair was fine. Assembly took about forty minutes. The instructions are useless—just pictures, no torque specs. Use the hex key that comes with it, not a drill, or you'll strip the bolts.
Who Should Skip It
If you're over 6'2" or under 5'4", the lumbar range might not fit. My buddy who's 6'4" tried it and the pad was still too high even at the lowest setting. He returned it. Also, if you need a headrest that actually supports your neck, look elsewhere. This one's only good if you recline all the way back.
The Next Step
Order the chair, but before you sit down, push that lumbar down as far as it goes. Then adjust the seat depth so you have about two finger-widths behind your knees. Do that first, and you'll skip the back pain I went through. If you're still unsure about lumbar support, check out Orthopedic Office Chair: The One Thing Everyone Gets Wrong and The Cheap Footrest for Office Chair That Actually Helped My Back.