Ease of use, simple to rotate which helps to reduce pain.
Would be nice if product came in a large and small size. I would like it better if the dia. was 4" less. Would fit better in vehicle and mower. Don't remember seeing the size listed. It is padded but don't think of it as a cushion. I would buy again.
Male, 280 lbs. with lower back pain.DOB: 1947