Description from website:
Your back gets support and extra relief from the built-in lumbar support.
This desk chair has adjustable tilt tension that allows you to adjust the resistance to suit your movements and weight.
The synchronised seat and back tilt follows your body movements and adjusts the chair to the correct position.
You sit comfortably since the chair is adjustable in height.
The mesh material of the backrest lets air through to your back during long sitting periods.
The safety castors have a pressure-sensitive brake mechanism that keeps the chair in place when you stand up, and releases automatically when you sit down.
felt pretty flimsy to me. seems ok for kids though.