The lumbar support isn't any better than a regular chair. The small black piece is soft so you just sit through it. It needs to be firm so you feel it when you sit back.
It seems to be made fairly well but the back it attached to the rest of the chair by one steel plate that bolts under the seat. It flexes side to side especially when reclining so I'm not sure how long it will be before it gets permanently bent one way or the other. This is probably a 2 year chair as I've had similar ones in the past that lasted about that long. I'm a big guy about 250 but it's rated for that so it shouldn't flex like it does.
the previous reviews were correct about this chair. it was easy to assemble with really easy instructions and labeled tools. It is comfortable and very sturdy. I have only had it for 1 week but so far I can sit here for multiple hours without back cramps or neck pain.
I tried this chair several times at Staples and found it comfortable. But not comfortable at home. Even bought a "Purple Seat Cushion" from Bed Bath & Beyond to raise the seat in order for the arm rests to be lower. Arm rests are too high for me. Wish they turned outward or moved further down. I like the easy movability.