I just purchased a rolling chair from Staples. It is very comfortable. It has posturpedic memory foam in the chair. The chair adjust in all ways and came in at $150 US. It has arms but for sewing they can be lowered all the way down. If there is no good office supply store near you remember staples.com, etc. Also remember when getting a rolling chair to get one with 5 legs not just four for stability. If I remember correctly this chair is also made for those of us who are fluffy.