A great chair for its price range. Good quality and easy to assemble. This chair has the “S track” rollers, which reaches from the next to lower back. I’m short (5’1) so the rollers actually hit on the back of my head, which isn’t painful but just something to keep in mind if you’re not too tall. The rollers are a bit too strong on my lower back but that’s just a matter of preference, and it’s easily remedied by placing a towel or cushion there.  The air bags feel fantastic on the calves! There are several “auto” modes. I wish there was a description of the different modes.  

I’ve had the chair for a few weeks and no complaints!