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

It's been around a month since I've purchased this chair, and it's both extremely comfortable as well as ergonomic. My back used to have a lot of pain from sitting and playing a lot of games, my old chair had no support for my neck or my lower back. If you find yourself sitting for more than 2 hours at a time to play games I would recommend DX racer chairs in a heartbeat.

In terms of stitching and cutting, the quality is second to none; it looks great! I also really like the neck and back cushions; they're supportive. I love these armrests and how they work. Not only are they of superior quality, but they are also quite solid. When you tilt the backrest to the rear, it locks into place securely and provides sturdy support!