Relieved lower back pain
I purchased this seat after I bought a Honda Civic.  The Civic is built for economy not for comfort.  I was getting sciatica down my left leg and had tremendous back pain in both my lower and upper back.  The cushion relieved the sciatica and lower back pain.  My upper back is still an issue on longer car rides.  I may have to find a different seat cushion that supports both lower and upper.
Rating: 4 stars