Adjustability is a key component of a quality ergonomic chair that can be adjusted for proper support for your individual stature. There are ergonomic chairs designed specifically for Petite, Standard Frame, Tall, and Plus size statures. A little chair for a big person will cause discomfort and lower back pain quickly. A big chair for a petite person will not allow them to sit back in the chair and benefit from the back support. Be sure you are using the correct size chair for your stature.