Aeron Chair Basic Back Support is designed by Bill Stumpf and Don Chadwick for the Herman Miller brand. The desk chair has a standard backrest made of 8Z Pellicle. The tilt is standard and adjustable so you can comfortably lean back while feeling balanced and well supported. It can be easily adapted to your own preferences. The desk chair is also designed with stationary armrests that have a fixed setting of 21.6 cm from the seat. The armrests have a standard padding in durable polyurethane foam that is comfortable to put on. The chair's castors are optimised to roll quietly on hard surfaces such as wood, tiles or carpeted floors. They have a subtle braking function that prevents them from rolling away when stationary and are made of durable black nylon with a soft finish. This gives the desk chair a good grip and dampens noise. In addition to this colour, the desk chair is available in several other stylish finishes.