Don't waste your money!
There were great expectations on my part.  However, I was very disappointed with this product.  I suffer from back and leg pain when driving over 2 hours.  This product did nothing to relieve that discomfort.  One of the reasons is because it is way too small!  The cushion doesn't come close to fitting my posterior and I am not a big guy, 6'0&#34;, 180 lbs.  Imagine you car seat.  This cushion will only cover about a third of it.  So, you have to try to balance yourself in the middle of it while trying to drive.  Just not a good product, in my opinion.
Rating: 1 stars