I was so optimistic about this purchase but optimism turned to disappointment only 2 hrs into my first day of use. The knee pad had enough padding on top but around the inside edge? Not so much and it actually caused pain below my knees. The wheels turn freely when the chair is upside down and you spin them with your finger; on the ground with your weight on it (I’m 6’2”, 215 lbs), the wheels become stiff and difficult to maneuver the chair. I’m sorry and I hope this review helps someone who might be thinking this would help alleviate low back pain associated with being in the seated position all day long; my advice, look at another kneeling chair.