I have back and neck issues and was looking for a chair that would change my posture.  This chair is sturdy and comfortable.  This chair definitely makes me sit in a better position and is well worth the money.  The only reason I did not give it 5 stars is because after sitting all day my knees do get tired.  Takes some used to getting on and off the chair and may be challenging with someone who is unsteady.  I love the rolling feature!

Pros: comfort, sturdy, great value
Cons: tricky to get on and off at first