Not nearly enough "lumbar" support and too soft. Changing from 3 stars to 1 star after a weeks use due to cushion flattening out to point of no support. DO NOT buy this cushion. After several days of use it has lost it's shape and is so soft it doesn't give any lumbar support. Don't waste your money.
Brought this for my daughter, she is pregnant currently and always complaining back hurts while seating in the office chair. She said it is very nicely curved to fit her back and have very good support, she loves it. Great product. The outer cover has a zipper, so it can be removed from the cushion for laundering when necessary. The cover material seems high quality and strong and the cushion with cover came professionally packaged.
Arrived as scheduled and is the most softest, but conforming foam support. I bought it because the new car I bought has what I call concave bucket seats. it was starting to stress my lower back and round my shoulders. I've had this support for a couple of days and I can feel the difference in my back. Would recommend. :)