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

The chair is decent. I am happy with it and the seat design. I'm not too fond of the gaming chairs that have sides that push into your hips. This seat is nice all the way across.

This chair is absolutely comfortable to sit on. It's soft, the armrests are height adjustable which I can't confirm myself as I haven't tried it, but I'd like to point it out anyway) and the material always goes back to its original position. The cushion provides very good support when sitting and helps you sit up straight, which is comfortable for your back. The neck pillow is also very comfortable. The seat cushion itself is made of leather and looks very elegant.