Steel frame construction. I would recommend this chair and buy it again.

12/05/2016 and now 04/04/2016 the chair has been retired, never broke never had any issues, these GEN 1 dxracers were good but the cushions are flat and the fabrics are beyond stained... beer mostly, milk, food, sweat, boogies and people and friends on it. I believe that to be 7+ years out of a chair i think those years were worth the $300 spent. R.I.P. DXRACER.

Overall quality is good & it is packed well w/good instructions, arrived via FEDEX quickly. As a 6'3", 260lb, man who spends close to 12 hours at his computer (between work and live streaming) I have to say this is pretty comfortable.