Alera Kesson Series Petite Office Chair, Supports Up to 300 lb, 17.71" to 21.65" Seat Height, BlackSo comfortable, you might forget you're at work. The petite chair is designed and scaled with the petite user's proportions in mind. Constructed with a molded foam back and seat for resiliency and maximum comfort. The height adjustable T arms are padded for further support and cushioning, providing maximum comfort for long periods of sitting. Includes a swivel tilt mechanism for ease of adjustment.