The Mirra 2 Office Stool Triflex Back with Fixed Arms is meant for comfort and individualized ergonomics. Some innovations of this ergo stool are the adjustable height from 23-33", the choice of having lumbar support to maintain posture, and ultimately the ability to adjust the arms. The Mirra 2 Stool accommodates dynamic support for any setting of comfort whether seated or standing. Experience this ergonomically friendly Mirra 2 Office Stool Triflex Back with Fixed Arms in the any modern home or office setting.